公共英语考试

【单选题】Overweight has become a problem people all around the world face, and it does not look like it will be solved in the near future regardless of the various efforts from all walks of life.And for those who have a heavier body than they are supposed to, one advice is given repeatedly: eat less and exercise more. This has long been the suggestion for getting rid of those extra pounds.But now it seems that all the hard work may have been in vain. Scientists say there are ten other reasons why people just keep getting bigger.
Scientists claim that sleeping habits, central heating, medicines and even some pollutants can play a role in weight gain. Lack of sleep could be partly to blame. In recent years, the average night’s sleep has dropped from nine hours to just seven. Sleep lack changes levels of the hormones that regulate food intake and body fat and increase hunger and appetite.
If it is too hot or too cold, we burn calories to cool down or heat up.But if the temperature is just right, the calories may be turned into body fat insteaD、
Those who take medicines to control their blood pressure can often put on more weight. Similarly, studies have shown that going on the Pill can add to a woman’s weight. Mother Nature may also be to blame, with our body shape being partly determined by our parents. The overweight are also more likely to be associated with partners of a similar size, and their children are more likely to be overweight.
The scientists from Yale,Cornell and Johns Hopkins published their analysis of these findings last week. Their reasoning goes like this:
1. Sleep--Too little increases appetite.
2. Medicine--Many modern medicines lead to us putting on weight.
3. Mother’s age--Older women are more likely to have obese children.
4. Giving up smoking--Nicotine suppresses the appetite.
5. Getting older--Weight tends to increase with age.
Which factor is mentioned in paragraph 2
A、Too much sleep may increase one’s weight.

B、Lack of sleep may be one of the reasons causing the overweight problem.
C．9 hours of sleep is perfect for people to stay slim.
D．Less than 7 hours of sleep will increase the danger of gaining extra pounds.

网考网参考答案：B
网考网解析：
考查细节。题干明确告诉我们出题处在原文的第二段，结合选项都在讨论“sleep’’相关的话题这一特征，我们找到第二段进行对比阅读，我们可以发现，原文提到“人们的平均睡眠时间从9小时开始缩减到了小时，睡眠的不足是导致肥胖的部分原因”，与这一点含义相同的选项是B；A项正好与这一信息相反，C项和D项把原文对于人们睡眠减少这一现象的描述进行了泛化的推论，原文只是用数字来描述这一问题，并没有对这些数字表示的具体含义进行说明，C项和D项都脱离原文进行了各自的阐述，都属于干扰选项，需要排除。 document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>