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.
32. 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
33. 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.
34. 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
35. 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.
There’s a whole lot of things that people fill their stomachs with．Some of them keep people alive．Some of them taste good to people．Some of them help people win pie-eating contests．Alcohol does none of these things．Why do people keep drinking it ? And what does it do once it gets to their stomachs ?
There are all kinds of alcohol molecules (分子), but the one that people most often pour down their throat is ethanol (乙醇)．Ethanol is very tiny and it dissolves in water , so it gets into all sorts of places that it’s not supposed to．Alcohol heads for the digestive system．Because it dissolves in water , it can get into the water in the bloodstream．Because ethanol , to a certain extent , can pass through cell membranes (膜)．It can go almost anywhere．It spreads through the muscles , and is sweated --- unmetabolized(未经新车代谢的) and whole --- through the skin．It gets into the heart．It even takes a walk through the brain , and this is the secret of its powers．
Alcohol depresses the nerves , and the nerves affect almost every area of the body．Enough alcohol makes people sleep , so people who become unconscious choke on their own vomit (呕吐物)．Most worryingly , enough alcohol can shut down those parts of the brain just like any other parts．People become unconscious and their brains simply forget to breathe．
Alcohol is broken down in the liver．Alcohol doesn’t destroy the liver , but products that the liver breaks the alcohol into do cause damage．A glass of wine per day can not do any harm．Instead , it can prevent heart attacks or can make someone functionally young．And it is kind of nice to know that sometimes, relaxation and cheer can be bottled．All that’s needed is to take care how much alcohol is let into a person’s brain．
1．How does the author introduce the topic of the text ?
2．Why can alcohol reach the brain ?
A．Because it can move through water molecules in the blood．
B．Because it is small enough to get through any narrow space．
C．Because it is so light that the bloodstream can transport．
D．Because it is absorbed only by the cells in the stomach．
3．What’s the main idea of Paragraph 3 ?
A．Alcohol affects the work of the nerves．
B．Alcohol has an effect on people’s breath．
C．People are drunk when their brains get drunk．
D．Drinking too much is quite dangerous．
4．From the passage , we can know ______________．
A．many people like a drink when they feel relaxed．
B．enough alcohol can control the brain activities．
C．alcohol damages the liver indirectly．
D．proper alcohol may lead to better sleep．