问题 单项选择题

研究人员认为肥胖症和人体内寄存某些能产生特定气体的微生物有关,这些微生物使他们呼出的气体味道更难闻。加州洛杉矶CS医学中心分析了792为体检者的呼吸,发现呼出的甲烷和氢气量高的人的身高体重指数(BMI)比正常人要高2.4点,即属于肥胖人群。 根据以上描述不能推出:

A.胖人体内可能寄存着某些产生特定气体的微生物 

B.可以通过气体是否难闻来判断呼气者是否肥胖症患者 

C.呼出气体中甲烷和氢气含量高的人群比正常人群更胖 

D.甲烷和氢气的混合物味道较难闻

答案

参考答案:B

解析:解析 日常推理题。加州洛杉矶CS医学中心分析的结论是,是呼出的人的体重比正常人高。“甲烷和氢气量高”和“正常人”都是集合的概念。例如中国人比德国人勤奋。但是我们不能用勤奋这一标准来衡量一个人是中国人还是德国人。因为集合概念说的是一个整体的情况。因此答案是B。A中有可能,带有“可能”词语的往往是正确的。C是CS研究中心研究结果的另一种说法。D是结合题干信息,将研究结果和研究过程结合起来,可得到D是正确的,否则实验没有意义。 考点:日常结论

单项选择题
阅读理解

Some people don’t mind being fat. Other people can keep slim (苗条) without any effort. But a lot of people do put on too much weight and don’t like it. The question is, what can thy do about it?

Some believe exercise can be helpful. But the trouble is that it only makes you want to eat more. You might sweat out a couple of pounds playing tennis or climbing a mountain, but you put it all back on again with a big steak or bread and jam.

A helpful way is food choosing. But what sort of food should you choose? Some believe that the less they eat, the slimmer they will be. They don’t eat anything until they become weak with hunger. Some stick to milk and bananas. You’ll find you need a lot of bananas, and unless you live where they grow, they aren’t cheap. Another says that if you eat things like hard-boiled eggs, and apples with their skins on which are hard for your stomach to digest (消化), the more you eat, the thinner you get. This is because you use up the fat in your body to get the energy to digest the food.

For most of us these methods are too extreme (极端的). The simplest way is just to cut down on the carbohydrates (糖类) that means not eating bread, potatoes, cakes, sugar, rice, and so on and eating anything else you like. It’s straight forward and often quite effective.

Still others like to be more scientific. They are calorie countries. They get a table, which tells them that, for example, 100 grams of roast let of lamb gives you 330 calories and a 50 gram helping of Yokshire pudding gives you 130 calories.

小题1:.

. According to the passage, the best way to keep slim is ______.

A.exercising

B.hunger

C.food-choosing

D.eating milk and bananas小题2:.

There seems nothing wrong with exercise except that ______.

A.it makes you sweat

B.it’s hard work

C.it tires you out

D.it makes you eat more小题3:.

. The practical method suggested here means ______.

A.sticking to bananas

B.not eating many carbohydrates

C.eating as little as possible

D.eating things that are hard to digest小题4:.

. Which of the following do you think is the best title for the passage?

A.Don’t Eat Too Much

B.Various Ways of Losing Weight

C.Ways to Keep Fit

D.Food and Health