玉米花

一个著名的前卫可能在分析足球队的相对强弱方面非常在行。然而，一个电视广告商提出的该前卫在女连裤袜或爆玉米花方面也很在行的建议就不得不引起观众们的怀疑。当一个受欢迎的经常扮演医生的男演员出现在一个支持某一个不含咖啡因的咖啡品牌的广告中时会产生同样的反应。因为他在电视表演方面有相当多的经验，所以他在那方面的观点就值得重视，但是观众们有各种权利来怀疑他在咖啡广告中的权威性。下面哪一项是上面段落的推理必不可少的前提?()

A．权威作为合理证据的力量与权威在那个有争议的领域的专业化程度紧密相连。

B．在评价权威的能力时，实际经验比学术上接受的训练更重要。

C．许多商业电视广告中仅有的一种证据就是诉诸权威。

D．许多观众不能充分地评价电视广告中的权威性的呼吁。

The best example of how associations influence eating is that we often eat not because we're hungry but because it's "lunchtime," because foods smell good, or because our friends are eating.

More evidence that associations influence eating comes from marketing and advertising pressures to sell foods by offering huge servings. For example, movie theaters offer an extra large box of popcorn(爆玉米花)，which, at almost 900 calories, is equivalent to a major meal. Health professionals warn that as children, adolescents(青少年),and adults learn to prefer large portions and tasty foods high in fat,sugar,and calories,there has been a corresponding increase in rates of being overweight(from 25% in 1988 to 34% in 1998).Researchers are especially concerned about the continued rates of overweight and obesity(肥胖) in children since childhood obesity is very difficult to treat and an obese child has a high probability of becoming an obese adult with the associated health risks we discussed earlier.

Health professionals suggest that to avoid future increases in rates of overweight and obesity, we need to try hard to forget many of our food associations, which primarily involves decreasing size of food portions, increasing levels of activity to burn off excess calories.

26.The influence of food association can be seen clearly from the example that we often eat NOT

because________.

[A]it's time for lunch

[B]we're hungry

[C]foods smell delicious

[D]our friends are eating

27.From the passage we can infer that the "serving" in the second paragraph most

probably means________.

[A]an amount of food

[B]a special service

[C]a meal

[D]some calories

28.According to the author, because of an unhealthy food preference, the increase in rates of being

overweight was almost _____ during the ten years from 198 to 1998.

[A]10 per cent [B]20 per cent

[C]30 per cent [D]40 per cent

29.According to the passage, an obese child is _________.

[A]less at risk of heart diseases

[B]healthily fat

[C]very hard to get along with

[D]more likely to become an obese adult

30.In order to avoid future increases in rates of overweight and obesity, we need to do

a11 the following EXCEPT _________.

[A1make an effort to forget our food association

[B]eat less high-fat food

[C]do more exercise to consume excess calories

[D]eat less food