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.
喝一杯温暖的牛奶长期以来一直是那些想要睡个好觉的人的最佳选择。但现在一项研究发现，它确实有助于人们入睡——如果这牛奶是在夜间从奶牛身上挤出来的。

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.
研究人员发现，“夜间牛奶”含有更多的褪黑激素，已被证明有助于人们感到困倦并减少焦虑。

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.
这项由韩国首尔的研究人员进行的研究涉及喂养小鼠，这些小鼠被喂食由白天和夜间挤奶的奶牛制成的脱脂奶粉。

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.
根据发表在《药用食品杂志》上的研究，那些被喂食含有褪黑激素量是白天挤奶的牛奶的10倍的夜间牛奶的小鼠，活动量较少，焦虑感也较轻。

Night milk quickened the start of sleep and caused the mice to sleep longer.
夜间牛奶加快了小鼠入睡的开始，并使它们睡得更久。

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.
尽管到目前为止，不同时间收获的牛奶对人类的影响尚未经过测试，但已经建议那些晚上难以入睡的人服用褪黑素药物。

Previous studies have also indicated that milk can be excellent for helping sleep because of the calcium content, which helps people to relax.
以前的研究也表明，由于钙含量的原因，牛奶对于帮助睡眠非常有益，钙有助于人们放松。

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.
牛奶也是无糖和无添加剂的，营养师推荐睡前最佳选择是脱脂牛奶，因为它是最不会导致体重增加的。你在睡前摄入的脂肪越多，晚上对你的身体负担就越重。

1. According to the text, the mice fed with daytime milk_.
   A. started sleep more easily
   B. were more anxious
   C. were less active
   D. woke up later
   答案：B

2. Which of the following is true of melatonin according to the text?
   A.It’s been tested on mice for ten times.
   B.It can make people more energetic.
   C.It exists in milk in great amount.
   D. It’s used in sleeping drugs.
   答案：D

3. What can be a suitable title for the text?
   A. Night Milk and Sleep
   B. Fat, Sugar and Health
   C. An Experiment on Mice
   D. Milk Drinking and Health
   答案：A

4. How does the author support the theme of the text?
   A. By giving examples.
   B.By stating arguments.
   C. By explaining statistical data.
   D. By providing research results.
   答案：D