Question

【题目】阅读理解
A warm drink of milk before bed has long been the best choice for those wanting nights sleep. But now a study has found it really does help people nod off-if it is milked from a cow at night.
Researchers have discovered that" night milk" contains more melatonin(褪黑激素) which has been proven to help people feel sleepy and reduce anxiety.
The study, by researchers from Seoul, South Korea, involved mice being fed with dried milk powder made from cows milked both during the day and at night.
Those given night milk, which contained 10 times the amount of melatonin, were less active and less anxious than those fed with the milk collected during daytime, according to the study published in The Journal of Medicinal Food.
Night milk quickened the start of sleep and caused the mice to sleep longer.
While the effect of cows milk harvested at different time has not been tested on humans up to now, taking melatonin drugs has been suggested to those who are struggling to fall asleep at night.
Early studies have also showed that milk can be excellent for helping sleep because of containing Ca., which helps people to relax.
Milk is also sugar-free and additive-free(不含添加物的) with experts advising skimmed (脱脂的) milk as the best choice before bed as it is the least fattening. The more fat you take in before bedtime, the greater burden you will put on your body at night.
（1）Which of the following is true of melatonin according to the text?
A.it's used in sleeping drugs.
B.It's been tested on mice for ten years.
C.It can make people more energetic.
D.It exists in milk in great amount.
（2）According to the text, the mice fed with daytime milk______.
A.started sleep more easily
B.were less active
C.were more anxious
D.woke up lat
（3）How does the author support the main idea of the text?
A.By giving examples.
B.By introducing reasons.
C.By listing data.
D.By offering research results.
（4）What can be a suitable title for the text?
A.Fat Sugar and Health
B.Night Milk and Sleep
C.An Experiment on Mice
D.Milk Drinking and Health

Answer 1

【答案】
（1）A
（2）C
（3）D
（4）B
【解析】本文是一篇说明文，韩国首尔的研究者发现晚上牛奶包含更多的褪黑激素，这已经被证明能帮助人们感到困倦和减少焦虑。进一步证实了晚上喝牛奶有助于睡眠。
（1）考查推理判断。根据第二段“Researchers have discovered that" night milk" contains more melatonin(褪黑激素) which has been proven to help people feel sleepy and reduce anxiety.”以及第六段中的“taking melatonin drugs has been suggested to those who are struggling to fall asleep at night.”可知褪黑色素被用于安眠药物中。故选A。
（2）考查推理判断。根据第五段“Night milk quickened the start of sleep and caused the mice to sleep longer.”晚上牛奶加快睡眠的开始，使老鼠睡的时间更长。故选C。
（3）考查推理判断。根据第三段“The study, by researchers from Seoul, South Korea, involved mice being fed with dried milk powder made from cows milked both during the day and at night. ”来自汉城的研究可知，作者是通过提供研究结果来支持文章主题的。故选D。
（4）考查主旨大意。综合全文得知，本文讲的是晚上喝牛奶和睡眠之间的关系。故选B。