Question

【題目】Night Milk and Sleep

A warm drink of milk before bed has long been the best choice for those wanting a good night’s 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.

Previous studies have also indicated that milk can be excellent for helping sleep because of the calcium content, which helps people to relax.

Milk is also sugar-free and additive-free with nutritionists recommending skimmed 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】What does the phrase ‘nod off’ in the first paragraph mean?

A. Try to keep awake.

B. Try to sleep a longer time.

C. Change from being awake to a sleeping state.

D. Change from a sleeping state to being awake.

【2】According to the text, the mice being fed with night time milk _________.

A. woke up later B. were more anxious

C. were less active D. could not sleep well

【3】Why do lots of people think milk is excellent for helping sleep?

A. Because many people like drinking milk.

B. Because it’s been tested on mice ten times.

C. Because it can make people more energetic.

D. Because it contains calcium, which helps people to relax.

Answer 1

【答案】

【1】C

【2】C

【3】D

【解析】試題分析：這是一篇科普文，主要講了晚上采集的牛奶和睡眠的關(guān)系。通過對白鼠的測試表明，晚上采集的牛奶含有更多的褪黑激素（melatonin），攝入者能更好地睡眠以及睡更長的時間。這個研究成果已經(jīng)用來幫助有睡眠問題的人——注射褪黑激素針劑以幫助睡眠。

【1】題意：第一段中的“nod off”是什么意思？考查詞義理解題。A. Try to keep awake. 盡量保持清醒。B. Try to sleep a longer time. 試著睡更長的時間。C. Change from being awake to a sleeping state.從清醒到睡眠狀態(tài)的轉(zhuǎn)變。D. Change from a sleeping state to being awake. 從睡眠狀態(tài)轉(zhuǎn)變?yōu)榍逍褷顟B(tài)。根據(jù)下文的解釋“night milk” contains more melatonin, which has been proven to help people feel sleepy and reduce anxiety.，“夜奶”含有更多的褪黑激素，而褪黑激素被證明能幫助人們感覺困倦和減少焦慮，可知是有助于人們打盹，故選C。

【2】題意：根據(jù)該文，喂食夜間奶的小鼠 。考查細(xì)節(jié)理解題。根據(jù)Night milk quickened the start of sleep and caused the mice to sleep longer.，被喂食了夜奶的老鼠不太活躍，活動較少，可知選C。

【3】題意：為什么很多人認(rèn)為牛奶對睡眠有好處？考查細(xì)節(jié)理解題。A. Because many people like drinking milk. 因為很多人喜歡喝牛奶。B. Because it’s been tested on mice ten times.因為它已經(jīng)在老鼠身上測試過十次了。C. Because it can make people more energetic.因為它能讓人們更有活力。D. Because it contains calcium, which helps people to relax.因為它含有鈣，有助于人們放松。根據(jù)Previous studies have also indicated that milk can be excellent for helping sleep because of the calcium content, which helps people to relax.，可知因為鈣含量可以幫助人們放松，故選D。