学历教育 - 英语考试
共用题干
One useful anti-cancer drug can effectively erase the whorls（箩状指纹）and other characteristic marks that give people their distinctive fingerprints.Losing_________(51)could become troublesome. A case released online in a letter by Annals of Oncology（《肿瘤学年报》）indicates how big a_________(52)of losing fingerprints is.
Eng-Huat Tan,a Singapore-based medical doctor describes a 62-year old man who has used capecitabine（卡培他滨，一种化疗药物）to _________( 53 ) his nasopharyngeal（鼻炎的）cancer.
After three years on the_________(54),the patient decided to visit U.S.relatives last December. But he was stopped by U.S. customs officials__________(55)4 hours after entering the country when those officials couldn't get fingerprints from the man. There were no distinctive swirly（旋涡状的）_________(56)appearing from his index finger.
U.S.customs has been fingerprinting incoming foreign visitors for years,Tan says.Their index fingers are _________(57)and screened against digital files of the fingerprints of bad guys一terrorists and potential criminals that our federal guardians have been tasked with keeping out of the coun-try. Unfortunately,for the Singaporean traveler,one potential_________(58)effect of his drug treatment is a smoothing of the tissue on the finger pads.__________(59),no fingerprints.
"It is uncertain when fingerprint loss will__________(60)to take place in patients who are taking capecitabine,"Tan points out. So he cautions any physicians who________(61)the drug to provide their patients with a doctor's note pointing out that their medicine may cause fingerprints to disappear.
Eventually,the Singapore traveler made it into the United States.I guess the name on his passport didn't raise any red flags.But he is also now got the explanatory doctor's note一and won't leave home _________(62)it.
By the way,maybe the Food and Drug Administration,__________(63)approved use of the drug 11 years ago,should consider_________(64)its list of side effects associated with this medicine.The current list does note that patients may experience vomiting,stomach pain and some other side effects.But no where________(65)it mention the potential for loss of fingerprints.
_________(53)
A:treat
B:cut
C:find
D:smooth
查看答案
One useful anti-cancer drug can effectively erase the whorls（箩状指纹）and other characteristic marks that give people their distinctive fingerprints.Losing_________(51)could become troublesome. A case released online in a letter by Annals of Oncology（《肿瘤学年报》）indicates how big a_________(52)of losing fingerprints is.
Eng-Huat Tan,a Singapore-based medical doctor describes a 62-year old man who has used capecitabine（卡培他滨，一种化疗药物）to _________( 53 ) his nasopharyngeal（鼻炎的）cancer.
After three years on the_________(54),the patient decided to visit U.S.relatives last December. But he was stopped by U.S. customs officials__________(55)4 hours after entering the country when those officials couldn't get fingerprints from the man. There were no distinctive swirly（旋涡状的）_________(56)appearing from his index finger.
U.S.customs has been fingerprinting incoming foreign visitors for years,Tan says.Their index fingers are _________(57)and screened against digital files of the fingerprints of bad guys一terrorists and potential criminals that our federal guardians have been tasked with keeping out of the coun-try. Unfortunately,for the Singaporean traveler,one potential_________(58)effect of his drug treatment is a smoothing of the tissue on the finger pads.__________(59),no fingerprints.
"It is uncertain when fingerprint loss will__________(60)to take place in patients who are taking capecitabine,"Tan points out. So he cautions any physicians who________(61)the drug to provide their patients with a doctor's note pointing out that their medicine may cause fingerprints to disappear.
Eventually,the Singapore traveler made it into the United States.I guess the name on his passport didn't raise any red flags.But he is also now got the explanatory doctor's note一and won't leave home _________(62)it.
By the way,maybe the Food and Drug Administration,__________(63)approved use of the drug 11 years ago,should consider_________(64)its list of side effects associated with this medicine.The current list does note that patients may experience vomiting,stomach pain and some other side effects.But no where________(65)it mention the potential for loss of fingerprints.
_________(53)
A:treat
B:cut
C:find
D:smooth
Common Questions about Dreams
Does everyone dream ?
Yes. Research shows that we all dream. We have our most vivid dreams during a type of sleep called Rapid Eye Movement (REM) sleep. During REM sleep, the brain is very active. The eyes move quickly back and forth under the lids, and the large muscles of the body are relaxed. REM sleep occurs every 90-100 minutes, three to four times a night, and it lasts longer as the night goes on. ___1___ We dream at other times during the night, too, but those dreams are less vivid.
Do people remember their dreams ?
A few people remember their dreams. However, most people forget nearly everything that happened during the night — dreams, thoughts, and the short periods of time when they were awake. ___2___ It seems that the memory of the dream is not totally lost, but for some reason it is very hard to bring it back. If you want to remember your dream，the best thing to do is to write it down as soon as you wake up.
Are dreams in color ?
Most dreams are in color. However, people may not be aware of it for two reasons ： They don’t usually remember the details of their dreams, or they don’t notice the color because it is such a natural part of our lives. ___3___
Do dreams have meaning ?
Scientists continue to debate this issue. ___4___ Some people use dreams to help them learn more about their feelings, thoughts, behavior, motives, and values. Others find that dreams can help them solve problems. It’s also true that artists, writers, and scientists often get creative ideas from dreams.
How can I learn to understand my dreams ?
The most important thing to remember is that your dreams are personal. The people, actions, and situations in your dreams reflect your experience, your thoughts, and your feelings. Some dream experts believe that there are certain types of dreams that many people have，even if they come from different cultures or time periods. Usually, however, the same dream will have different meanings for different people. For example, an elephant in a dream may mean one thing to a zookeeper and something very different to a child whose favorite toy is a stuffed elephant. ___5___ Then look for links between your dreams and what is happening in your daily life. If you think hard and you are patient, perhaps the meaning of your dreams will become clearer to you.
词汇：
vivid /'vivid/ adj. 清晰的，生动的，逼真的
lid /lid/ n. 眼睑（=eyelid)
motive /m utiv/ n. 动机
stuffed /st ft/ adj. 填充的，塞满了的
注释：
1.back and forth：来回地，反复地。
2.bring it back：回忆起它来。bring back：使回忆起来，带回来、拿回来，使恢复。
3.Scientists continue to debate this issue. 科学家们不断地讨论这个问题。“debate”作动词“争 论，辩论，讨论”讲，既可以是不及物动词也可以是及物动词，作不及物动词时常与 “about/ on/upon” 搭配。
练习：
AHowever, people who spend time thinking about their dreams believe that they are meaningful and useful.
BThe final REM period may last as long as 45 minutes.
CPeople who are very aware of color when they are awake probably notice color more often in their dreams.
DOur most powerful dreams don’t happen during deep sleep.
ETo learn to understand your dreams, think about what each part of the dream means to you or reminds you of.
FSometimes, though, people suddenly remember a dream later in the day or on another day.
查看答案
Does everyone dream ?
Yes. Research shows that we all dream. We have our most vivid dreams during a type of sleep called Rapid Eye Movement (REM) sleep. During REM sleep, the brain is very active. The eyes move quickly back and forth under the lids, and the large muscles of the body are relaxed. REM sleep occurs every 90-100 minutes, three to four times a night, and it lasts longer as the night goes on. ___1___ We dream at other times during the night, too, but those dreams are less vivid.
Do people remember their dreams ?
A few people remember their dreams. However, most people forget nearly everything that happened during the night — dreams, thoughts, and the short periods of time when they were awake. ___2___ It seems that the memory of the dream is not totally lost, but for some reason it is very hard to bring it back. If you want to remember your dream，the best thing to do is to write it down as soon as you wake up.
Are dreams in color ?
Most dreams are in color. However, people may not be aware of it for two reasons ： They don’t usually remember the details of their dreams, or they don’t notice the color because it is such a natural part of our lives. ___3___
Do dreams have meaning ?
Scientists continue to debate this issue. ___4___ Some people use dreams to help them learn more about their feelings, thoughts, behavior, motives, and values. Others find that dreams can help them solve problems. It’s also true that artists, writers, and scientists often get creative ideas from dreams.
How can I learn to understand my dreams ?
The most important thing to remember is that your dreams are personal. The people, actions, and situations in your dreams reflect your experience, your thoughts, and your feelings. Some dream experts believe that there are certain types of dreams that many people have，even if they come from different cultures or time periods. Usually, however, the same dream will have different meanings for different people. For example, an elephant in a dream may mean one thing to a zookeeper and something very different to a child whose favorite toy is a stuffed elephant. ___5___ Then look for links between your dreams and what is happening in your daily life. If you think hard and you are patient, perhaps the meaning of your dreams will become clearer to you.
词汇：
vivid /'vivid/ adj. 清晰的，生动的，逼真的
lid /lid/ n. 眼睑（=eyelid)
motive /m utiv/ n. 动机
stuffed /st ft/ adj. 填充的，塞满了的
注释：
1.back and forth：来回地，反复地。
2.bring it back：回忆起它来。bring back：使回忆起来，带回来、拿回来，使恢复。
3.Scientists continue to debate this issue. 科学家们不断地讨论这个问题。“debate”作动词“争 论，辩论，讨论”讲，既可以是不及物动词也可以是及物动词，作不及物动词时常与 “about/ on/upon” 搭配。
练习：
AHowever, people who spend time thinking about their dreams believe that they are meaningful and useful.
BThe final REM period may last as long as 45 minutes.
CPeople who are very aware of color when they are awake probably notice color more often in their dreams.
DOur most powerful dreams don’t happen during deep sleep.
ETo learn to understand your dreams, think about what each part of the dream means to you or reminds you of.
FSometimes, though, people suddenly remember a dream later in the day or on another day.
共用题干
Obtaining Drinking Water from Air Humidity
Not a plant to be seen,the desert ground is too dry.But the air contains water,and research scientists
have found a. __________
(51)of obtaining drinking water from air humidity."The process we have
developed is based exclusively on renewable energy sources_________(52)thermal solar collectors and
photovoltaic（光电的）cells , ________( 53 ) makes this method completely energy-autonomous. It will
____________( 54 ) function in regions where there is no electrical infrastructure（基础设施）,"says Siegfried
Egner,head of the research team. The principle of the_________(55)is as follows:hygroscopic（吸湿的）
brine（盐水）一saline（含盐的）solution which absorbs moisture一runs down a tower-shaped unit and absorbs
water from the air. It is then sucked__________(56)a tank a few meters off the ground in which a vacuum
prevails.Energy from solar collectors_________(57)up the brine,which is diluted by the water it has
__________ (58).
Because of the vacuum,the boiling point of the liquid is lower than it would be under__________(59)
atmospheric pressure. The evaporated (蒸发的）, non-saline water is condensed and runs down through a
completely filled tube in a controlled manner. The gravity of this water column_______(60)produces the
vacuum and so a vacuum pump is not needed.The reconcentrated brine________(61)down the tower
surface again to absorb moisture from the air.
"The concept is suitable for various water________(62).Single一person units and plants
supplying water to entire hotels are conceivable,"says Egner. Prototypes have been built for_______
(63)system components一air moisture absorption and vacuum evaporation一and the research scientists
have already __________(64)their interplay on a laboratory scale.In a further ________(65)the re-
searchers intend to develop a demonstration facility.
_________(60)
A:continuously
B:suddenly
C:typically
D:seriously
查看答案
Obtaining Drinking Water from Air Humidity
Not a plant to be seen,the desert ground is too dry.But the air contains water,and research scientists
have found a. __________
(51)of obtaining drinking water from air humidity."The process we have
developed is based exclusively on renewable energy sources_________(52)thermal solar collectors and
photovoltaic（光电的）cells , ________( 53 ) makes this method completely energy-autonomous. It will
____________( 54 ) function in regions where there is no electrical infrastructure（基础设施）,"says Siegfried
Egner,head of the research team. The principle of the_________(55)is as follows:hygroscopic（吸湿的）
brine（盐水）一saline（含盐的）solution which absorbs moisture一runs down a tower-shaped unit and absorbs
water from the air. It is then sucked__________(56)a tank a few meters off the ground in which a vacuum
prevails.Energy from solar collectors_________(57)up the brine,which is diluted by the water it has
__________ (58).
Because of the vacuum,the boiling point of the liquid is lower than it would be under__________(59)
atmospheric pressure. The evaporated (蒸发的）, non-saline water is condensed and runs down through a
completely filled tube in a controlled manner. The gravity of this water column_______(60)produces the
vacuum and so a vacuum pump is not needed.The reconcentrated brine________(61)down the tower
surface again to absorb moisture from the air.
"The concept is suitable for various water________(62).Single一person units and plants
supplying water to entire hotels are conceivable,"says Egner. Prototypes have been built for_______
(63)system components一air moisture absorption and vacuum evaporation一and the research scientists
have already __________(64)their interplay on a laboratory scale.In a further ________(65)the re-
searchers intend to develop a demonstration facility.
_________(60)
A:continuously
B:suddenly
C:typically
D:seriously
共用题干
Scientists Develop Ways of Detecting Heart Attack
German researchers have___1___a new generation of defibrillators and earlywarning software aimed at offering heart patients greater protection___2___sudden death from cardiac arrest.
In Germany alone around 100,000 people die annually as a result of cardiac arrest and many of these cases___3___by disruption to the heart's rhythm. Those most at risk are pa- tients who have___4___suffered a heart attack,and for years the use of defibrillators has proved useful in diagnosing___ 5___ disruptions to heart rhythms and correcting them automat-ically by intervening within seconds. These devices___6___ a range of functions,such as that of pacemaker.
Heart specialists at Freiburg's University Clinic have now achieved a breakthrough with an implanted defibrillator ___7___of generating a six-channel electrocardiogram(ECG)within the body. This integrated system allows early diagnosis of___8___blood-flow problems and a pending heart attack. It will be implanted in patients for the first time this year. Meanwhile, researchers at the Fraunhofer Institute for Applied Mathematics in Kaiserslautern have developed new computer software that renders the evaluation of ECG data___9___.
The overwhelming___10___of patients at risk will not have an implanted defibrillator and must for this reason undergo regular ECGs.“Many of the current programs only ___11___ into account a linear correlation of the data. We are,however,making use___12___ a non-linear process that reveals the chaotic patterns of heart beats as an open and complex system,”
Hagen Knaf says,“___ 13___ changes in the heart beats over time can be monitored and indi- vidual variations in patients taken into account.”An old study of ECG data,based___14___ 600 patients who had suffered a subsequent heart attack,enabled the researchers to compare risks and to show___15___the new software evaluates the data considerably better.
7._________
A: capable
B: able
C: skillful
D: skilled
查看答案
Scientists Develop Ways of Detecting Heart Attack
German researchers have___1___a new generation of defibrillators and earlywarning software aimed at offering heart patients greater protection___2___sudden death from cardiac arrest.
In Germany alone around 100,000 people die annually as a result of cardiac arrest and many of these cases___3___by disruption to the heart's rhythm. Those most at risk are pa- tients who have___4___suffered a heart attack,and for years the use of defibrillators has proved useful in diagnosing___ 5___ disruptions to heart rhythms and correcting them automat-ically by intervening within seconds. These devices___6___ a range of functions,such as that of pacemaker.
Heart specialists at Freiburg's University Clinic have now achieved a breakthrough with an implanted defibrillator ___7___of generating a six-channel electrocardiogram(ECG)within the body. This integrated system allows early diagnosis of___8___blood-flow problems and a pending heart attack. It will be implanted in patients for the first time this year. Meanwhile, researchers at the Fraunhofer Institute for Applied Mathematics in Kaiserslautern have developed new computer software that renders the evaluation of ECG data___9___.
The overwhelming___10___of patients at risk will not have an implanted defibrillator and must for this reason undergo regular ECGs.“Many of the current programs only ___11___ into account a linear correlation of the data. We are,however,making use___12___ a non-linear process that reveals the chaotic patterns of heart beats as an open and complex system,”
Hagen Knaf says,“___ 13___ changes in the heart beats over time can be monitored and indi- vidual variations in patients taken into account.”An old study of ECG data,based___14___ 600 patients who had suffered a subsequent heart attack,enabled the researchers to compare risks and to show___15___the new software evaluates the data considerably better.
7._________
A: capable
B: able
C: skillful
D: skilled
共用题干
Microchip Research Center Created
A research center has been______(51)in this Far Eastern country to develop advanced microchip production technology.The center,which will start out with about US$14 million,will help the country develop its chip industry without always depending on imported technology.
The center will make use of its research skills and______(52)to develop new technology for _______(53)chip plants.The advent of the center will possibly free the country from the_______(54) that it is always buying almost-outdated technologies from other countries,said the country's flagship chipmaker.______(55),chip plants in this country are in a passive situation because many foreign governments don't allow them to______(56)the most advanced technologies,fearing they will be used for______(57) purposes.Moreover,the high licensing fees they have to pay to technology providers are also an important _(58)for their decision of self-reliance.
As mainstream chip production technology______(59)from one generation to the next every three to five years,plants with new technology can make more powerful chips at lower costs,while plants with______(60)equipment,which often cost billions of dollars to build,will be______(61)by the maker.
More than 10 chip plants are being built,each costing millions of US dollars.The majority of that money goes to overseas equipment______(62)and technology owners-mainly______(63)Japan and Singapore.
Should the new center play a major role in improving the situation in the industry,the country admits the US $14 million investment is still rather small.This country is developing______(64)technologies.Most of the investment will be spent on setting_______(65)with technology and intellectual property owners.
53._________
A:docile
B:domestic
C:domicile
D:foreign
查看答案
Microchip Research Center Created
A research center has been______(51)in this Far Eastern country to develop advanced microchip production technology.The center,which will start out with about US$14 million,will help the country develop its chip industry without always depending on imported technology.
The center will make use of its research skills and______(52)to develop new technology for _______(53)chip plants.The advent of the center will possibly free the country from the_______(54) that it is always buying almost-outdated technologies from other countries,said the country's flagship chipmaker.______(55),chip plants in this country are in a passive situation because many foreign governments don't allow them to______(56)the most advanced technologies,fearing they will be used for______(57) purposes.Moreover,the high licensing fees they have to pay to technology providers are also an important _(58)for their decision of self-reliance.
As mainstream chip production technology______(59)from one generation to the next every three to five years,plants with new technology can make more powerful chips at lower costs,while plants with______(60)equipment,which often cost billions of dollars to build,will be______(61)by the maker.
More than 10 chip plants are being built,each costing millions of US dollars.The majority of that money goes to overseas equipment______(62)and technology owners-mainly______(63)Japan and Singapore.
Should the new center play a major role in improving the situation in the industry,the country admits the US $14 million investment is still rather small.This country is developing______(64)technologies.Most of the investment will be spent on setting_______(65)with technology and intellectual property owners.
53._________
A:docile
B:domestic
C:domicile
D:foreign
共用题干
As many as 20% of all children in the United States suffer from some form of the learning disorder called dyslexia.
Experts on dyslexia say that the problem is not a disease.They say that persons with dyslexia use information in a different way.One of the world's great thinkers and scientists,Albert Einstein was dyslexic.Einstein said that he never thought in words the way that most people do.He said that he thought in pictures instead.The American inventor Thomas Edison was also dyslexic.Dyslexia first was recognized in Europe and the United States more than 80 years ago.Many years passed before doctors discovered that persons with the disorder were not mentally slow or disabled.The doctors found that the brains of persons with dyslexia are different.In most people,the left side of the brain一 the part that controls language is larger than the right side.In persons with dyslexia,the right side of the brain is bigger. Doctors are not sure what causes this difference.However,research has shown that dyslexia is more common in males than in females,and it is found more often in persons who are left handed.No one knows the cause of dyslexia,but some scientists believe that it may result from chemical changes in a baby's body long before it is born.They are trying to find ways to teach persons with dyslexia. Dyslexic persons think differently and need special kinds of teaching help.After they have solved their problems with language,they often show themselves to be especially intelligent or creative.
Many great thinkers and scientists in the world are dyslexic.
A:Right
B: Wrong
C:Not mentioned
查看答案
As many as 20% of all children in the United States suffer from some form of the learning disorder called dyslexia.
Experts on dyslexia say that the problem is not a disease.They say that persons with dyslexia use information in a different way.One of the world's great thinkers and scientists,Albert Einstein was dyslexic.Einstein said that he never thought in words the way that most people do.He said that he thought in pictures instead.The American inventor Thomas Edison was also dyslexic.Dyslexia first was recognized in Europe and the United States more than 80 years ago.Many years passed before doctors discovered that persons with the disorder were not mentally slow or disabled.The doctors found that the brains of persons with dyslexia are different.In most people,the left side of the brain一 the part that controls language is larger than the right side.In persons with dyslexia,the right side of the brain is bigger. Doctors are not sure what causes this difference.However,research has shown that dyslexia is more common in males than in females,and it is found more often in persons who are left handed.No one knows the cause of dyslexia,but some scientists believe that it may result from chemical changes in a baby's body long before it is born.They are trying to find ways to teach persons with dyslexia. Dyslexic persons think differently and need special kinds of teaching help.After they have solved their problems with language,they often show themselves to be especially intelligent or creative.
Many great thinkers and scientists in the world are dyslexic.
A:Right
B: Wrong
C:Not mentioned
共用题干
Late-night Drinking
Coffee lovers,be careful. Having a quick “pick-me-up” cup of coffee late in the day will interrupt your sleep. As well as being a stimulant（兴奋剂）,caffeine interrupts the flow of melatonin（褪黑激素）,the brain hormone that sends people into a sleep.
Melatonin levels normally start to rise about two hours before bedtime. Levels then peak between 2 am and 4 am, before falling again.“It's the neurohormone（神经激素）that con-trols our sleep and tells our body when to sleep and when to wake,”says Maurice Ohayon of the Stanford Sleep Epidemiology Research Center at Stanford University in California. But researchers in Israel have found that caffeinated coffee halves the body's levels of this sleep hormone.
Lotan Shilo and a team at the Sapir Medical Center in Tel Aviv University found that six volunteers slept less well after a cup of caffeinated coffee than after drinking the same amount of decaf（脱咖啡因咖啡）.On average, subjects slept 336 minutes per night after drinking caffeinated coffee,compared with 415 minutes after decaf. They also took half an hour to drop off,twice as long as usual.
In the second phase of the experiment,the researchers woke the volunteers every three hours and asked them to give a urine（尿）sample. Shilo measured concentrations of a break-down product of melatonin. The results suggest that melatonin concentrations in caffeine drinkers were half those in decaf drinkers. In a paper accepted for publication in Sleep Medi-cine,the researchers suggest that caffeine blocks production of the enzyme（酶）that drives melatonin production.
Because it can take many hours to eliminate caffeine from the body. Ohayon recommends that coffee lovers switch to decaf after lunch.
The author mentions“pick-me-up” to indicate that______.
A: melatonin levels need to be raised
B: coffee is a stimulant
C: neurohormone can wake us up
D: caffeine can balance our brain hormone
查看答案
Late-night Drinking
Coffee lovers,be careful. Having a quick “pick-me-up” cup of coffee late in the day will interrupt your sleep. As well as being a stimulant（兴奋剂）,caffeine interrupts the flow of melatonin（褪黑激素）,the brain hormone that sends people into a sleep.
Melatonin levels normally start to rise about two hours before bedtime. Levels then peak between 2 am and 4 am, before falling again.“It's the neurohormone（神经激素）that con-trols our sleep and tells our body when to sleep and when to wake,”says Maurice Ohayon of the Stanford Sleep Epidemiology Research Center at Stanford University in California. But researchers in Israel have found that caffeinated coffee halves the body's levels of this sleep hormone.
Lotan Shilo and a team at the Sapir Medical Center in Tel Aviv University found that six volunteers slept less well after a cup of caffeinated coffee than after drinking the same amount of decaf（脱咖啡因咖啡）.On average, subjects slept 336 minutes per night after drinking caffeinated coffee,compared with 415 minutes after decaf. They also took half an hour to drop off,twice as long as usual.
In the second phase of the experiment,the researchers woke the volunteers every three hours and asked them to give a urine（尿）sample. Shilo measured concentrations of a break-down product of melatonin. The results suggest that melatonin concentrations in caffeine drinkers were half those in decaf drinkers. In a paper accepted for publication in Sleep Medi-cine,the researchers suggest that caffeine blocks production of the enzyme（酶）that drives melatonin production.
Because it can take many hours to eliminate caffeine from the body. Ohayon recommends that coffee lovers switch to decaf after lunch.
The author mentions“pick-me-up” to indicate that______.
A: melatonin levels need to be raised
B: coffee is a stimulant
C: neurohormone can wake us up
D: caffeine can balance our brain hormone
共用题干
1. Icebergs are among nature's most spectacular（壮观的）creations , and yet most people have never seen one.A vague air of mystery envelops them.They come into being somewhere in faraway, frigid waters,amid thunderous noise and splashing turbulence,which in most case no one hears or sees. They exist only a short time and then slowly waste away（消融）just as unnoticed.
2. Objects of sheerest（最纯粹的）beauty they have been called. Appearing in an endless vaniety of shapes,they may be dazzlingly white,or they may be glassy blue,green or purple,tinted faintly on in darker hues.They are graceful, stately,inspiring in calm,sunlight seas.
3.But they are also called frightening and dangerous,and that they are一in the night,in the fog,and in storms.Even in clear weather one is wise to stay a safe distance away from them.Most of their bulk is hidden below the water,so their underwater parts may extend out far beyond the visible top.Also,they may roll over unexpectedly,churning the waters around them.
4.Icebergs are parts of glaciers that break off,drift into the water,float about awhile,and finally melt.Icebergs afloat today are made of snowflakes that have fallen over long ages of time.They embody snows that drifted down hundreds,or many thousands,or in some cases maybe a million years ago.The snows fell in polar region and on cold mountains,where they melted only a little or not at all,and so collected to great depths over the years and centuries.As each year's snow accumulation lay on the surface,evaporation and melting caused the snowflakes slowly to lose their feathery points and become tiny grains of ice.When new snow fell on top of the old,it too turned to icy grains.So blankets of snow and ice grains mounted layer upon layer and were of such great thickness that the weight of the upper layers compressed the lower ones.With time and pressure from above, the many small ice grains joined and changed to larger crystals,and eventually the deeper crystals merged into a solid mass of ice.
Paragraph 4___________
A:Formation of iceberg
B:Iceberg is beautiful
C:Color of iceberg
D:Iceberg is dangerous
E:Iceberg is mysterious
F:Classification of iceberg
查看答案
1. Icebergs are among nature's most spectacular（壮观的）creations , and yet most people have never seen one.A vague air of mystery envelops them.They come into being somewhere in faraway, frigid waters,amid thunderous noise and splashing turbulence,which in most case no one hears or sees. They exist only a short time and then slowly waste away（消融）just as unnoticed.
2. Objects of sheerest（最纯粹的）beauty they have been called. Appearing in an endless vaniety of shapes,they may be dazzlingly white,or they may be glassy blue,green or purple,tinted faintly on in darker hues.They are graceful, stately,inspiring in calm,sunlight seas.
3.But they are also called frightening and dangerous,and that they are一in the night,in the fog,and in storms.Even in clear weather one is wise to stay a safe distance away from them.Most of their bulk is hidden below the water,so their underwater parts may extend out far beyond the visible top.Also,they may roll over unexpectedly,churning the waters around them.
4.Icebergs are parts of glaciers that break off,drift into the water,float about awhile,and finally melt.Icebergs afloat today are made of snowflakes that have fallen over long ages of time.They embody snows that drifted down hundreds,or many thousands,or in some cases maybe a million years ago.The snows fell in polar region and on cold mountains,where they melted only a little or not at all,and so collected to great depths over the years and centuries.As each year's snow accumulation lay on the surface,evaporation and melting caused the snowflakes slowly to lose their feathery points and become tiny grains of ice.When new snow fell on top of the old,it too turned to icy grains.So blankets of snow and ice grains mounted layer upon layer and were of such great thickness that the weight of the upper layers compressed the lower ones.With time and pressure from above, the many small ice grains joined and changed to larger crystals,and eventually the deeper crystals merged into a solid mass of ice.
Paragraph 4___________
A:Formation of iceberg
B:Iceberg is beautiful
C:Color of iceberg
D:Iceberg is dangerous
E:Iceberg is mysterious
F:Classification of iceberg
共用题干
第三篇
A New Cause of Suffering
A conference on obesity（肥胖症）was recently held in Vienna. Two thousand experts
from more than fifty countries attended the conference.According to statistics,1.2 billion
people worldwide are overweight,and 250 million are too fat.Obesity is rapidly becoming a
new cause of suffering.
Professor Friedrich Hopichler of Salzberg said:"We are living in the new age but with
the metabolism（新陈代谢）of a stone-age man. I have just been to the United States. It is
really terrible. A pizza（比萨饼）shop is appearing on every corner. We have been
occuoied by fast food and Coca-Cola-ization."
Many of the experts stressed that obesity was a potential killer.Hopicnier saia:
"Eighty per cent of all diabetics（糖尿病人）are too fat,also fifty per cent of all patients with
high blood pressure and fifty per cent with fatty（脂肪的）tissue complaints. Ten per cent
more weight means thirteen per cent more risk of heart disease.Reducing one's weight by
ten oer cent leads to thirteen per cent lower blood pressure."
Another expert Hermann Toplak said that the state health services should improve their
financing of preventive programs,"The health insurance pays for surgery(such as
reducing the size of the stomach ) when the body-mass index（身体质量指数）is more than
40.That is equivalent to a weight of 116 kilograms for a height of 1.60 meters.One should
start earlier."
Toplak said that prevention should begin in school.“Child obesity has a close relation
with the time which children spend in front of TV sets."
Hermann Toplak suggested that more money should be spent on
A:surgery.
B:fat people.
C:preventive programs.
D:state health services.
查看答案
第三篇
A New Cause of Suffering
A conference on obesity（肥胖症）was recently held in Vienna. Two thousand experts
from more than fifty countries attended the conference.According to statistics,1.2 billion
people worldwide are overweight,and 250 million are too fat.Obesity is rapidly becoming a
new cause of suffering.
Professor Friedrich Hopichler of Salzberg said:"We are living in the new age but with
the metabolism（新陈代谢）of a stone-age man. I have just been to the United States. It is
really terrible. A pizza（比萨饼）shop is appearing on every corner. We have been
occuoied by fast food and Coca-Cola-ization."
Many of the experts stressed that obesity was a potential killer.Hopicnier saia:
"Eighty per cent of all diabetics（糖尿病人）are too fat,also fifty per cent of all patients with
high blood pressure and fifty per cent with fatty（脂肪的）tissue complaints. Ten per cent
more weight means thirteen per cent more risk of heart disease.Reducing one's weight by
ten oer cent leads to thirteen per cent lower blood pressure."
Another expert Hermann Toplak said that the state health services should improve their
financing of preventive programs,"The health insurance pays for surgery(such as
reducing the size of the stomach ) when the body-mass index（身体质量指数）is more than
40.That is equivalent to a weight of 116 kilograms for a height of 1.60 meters.One should
start earlier."
Toplak said that prevention should begin in school.“Child obesity has a close relation
with the time which children spend in front of TV sets."
Hermann Toplak suggested that more money should be spent on
A:surgery.
B:fat people.
C:preventive programs.
D:state health services.
The weather is a constant subject of conversation in Britain.
A:question
B:problem
C:title
D:topic
查看答案
A:question
B:problem
C:title
D:topic