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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
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Tiny Invaders
The human body is truly amazing. It allows us to sense the world around us,to do work and have fun,
and to move from place to place.In fact,the human body does its work so well that most people don't think
about it very much-until they get sick.
The germs（致病菌）that make people sick are everywhere. You can ' t see them , but they ' re there.
They're sitting on your desk.They're hiding on your computer's keyboard.They're even in the air that you
are breathing. There are two types of germs : viruses and bacteria（细菌）.Viruses are germs that can only
live inside animals or plants. Viruses cause illnesses such as flu and measles（麻疹）.Bacteria are tiny
creatures.Some bacteria are good.They can help your stomach break down food.Other bacteria aren't so
good. They can make you sick. Bacteria can cause sore throats（喉痛）and ear infections.
How can you stop these tiny invaders from making you sick?Your skin is the first defense against
germs.You can prevent some illnesses simply by washing,with soap and water. But germs can still enter the
body through small cuts in the skin or through the mouth,eyes,and nose.
Once germs are inside your body , your immune（免疫的）system tries to protect you. It looks for and
destroys germs.How does it do that?Special cells patrol your body.Some of these cells actually eat germs!
Other cells make antibodies.An antibody sticks to a germ.There is a different antibody for each kind of
germ.Some antibodies keep germs from making you sick.Others help your body find and kill germs.After a
germ is destroyed,the antibodies stay in your body.They protect you if the same kind of germ comes back.
That way you will not get the same illness twice.
You can keep your body healthy by eating a nutritious（有营养的）diet to make your immune systerm
strong. You can also help your immune system fight germs by getting vaccinated（接种）.Vaccines are
medicines.They contain germs that have been killed or weakened.The dead germs can't make you sick.
Instead,they cause your body to make antibodies.If the same germ ever shows up again,then your
antibodies attack it.
Vaccines can make you sick.
A:Right
B:Wrong
C:Not mentioned -
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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 -
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Going on a Diet
A typical person needs about 1,800 calories per day to stay alive. These calories keep your heart___ 1 ___and your lungs breathing. They keep your organs operating___ 2___ and,your brain running. They also keep your body warm. A person___ 3___weight because he or she consumes more calories per day than needed. The only way to lose fat is to ___4 ___the number of calories that you consume per day. This is the basic___5___behind going on a diet.
Unfortunately,diets don't___6___or most people. They do lose weight but then go ___7___the diet and put it back. Building a sensible diet and exercise plan is the key to___8___ consistent weight. You need to figure out how many calories you need in a day and how many you ___9___take in. The next step is to add exercise so that you can ___10___the number of cal-onies you can consume per day.
Exercise charts can show you how many calories different___11___of exercise can burn.
Burning 250 or 500 calories per day can___12___ a big difference. You can ride an exercise bike while you are watching TV or you can ___13___ the stairs instead of the elevator. Find an exer- cise___14___.Exercise can be a lot easier if there is someone to talk to. It's a good idea to wear firm-fitting clothes if you are on a diet.___15___clothing acts as a reminder of what you are trying to accomplish.
4._________
A: double
B: reduce
C: fix
D: remove -
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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. -
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Cooking Oil Fumes Cause Tumor
The leading cause of lung cancer among women in the city was cooking oil fumes while men are more likely to develop the disease from smoking,said medical experts after a five-year research study.
Doctors announced the results yesterday with analysis on some new tendencies in lung cancer. They said patients are younger,especially women.
According to the Shanghai Tumor research Institute,more local residents die of lung cancer in the city than anything else.Following breast cancer,it has the second-highest incidence rate.
“An unhealthy lifestyle is a very important reason for lung cancer,”said Dr He Yumin from Shanghai Minshen Traditional Chinese Medicine Tumor Diagnosis and Treatment Center.
He followed 2,276 lung cancer patients for five years.Among them,1,483 were male.
Smoking causes 70 percent of cases among men while only 18 percent of female patients developed cancer from smoking or inhaling second-hand smoke,according to the report.
However,more than 60 percent of women with the disease had long term,close contact with strong oil fumes from cooking and complained about irritated eyes and throat.
About 32 percent of women fried foods in boiling oil in unventilated kitchens and about 25 percent of women's bedrooms were adjacent to the kitchen.
However,local women were surprised to learn cooking oil fumes could lead to cancer.
Some claimed they may change food preparation methods.
“Unless my family and I don't eat at home every day,I must stay in the kitchen to cook,”said Xu Li,a 45-year-old local woman. “I know the fumes are bad for the skin,but it is the first time I heard that it can result in lung cancer. I have already started frying less.”
Doctors said women's lung cancer had few links to personal health and physical condition,but was closely related to family cancer history,unhealthy dietary habits and weak immune systems.
Other experts agreed with him.
“Smoking is by far the biggest cause of lung cancer for men,”said Dr Tan Binyong, honorary president of the Respiratory Disease Institute at Fudan University's Medical College.“It's true that second-hand smoke and cooking fumes are the main causes among women.”
His research also warned people not to stand near of stalls selling fried foods due to the poor quality of oils used.
The chance of catching lung cancer is three times higher if exposed to the fume for a long time,6 experts said.
What a new tendency in lung cancer is concluded by the researchers?
A: Men are more likely to develop lung cancer than women.
B: Women are more likely to develop lung cancer than men.
C: Patients with lung cancer become older,especially males.
D: Patients with lung cancer become younger,especially females.