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Do you want to know why you are hungrier than usual if you do not get a good night's sleep? Researchers from the University of Chicago say they have found one reason. Their study shows that a lack of sleep makes people hungrier the following day. A lack of sleep produces chemicals in the brain that makes you feel like eating, which also makes us eat more. We want to eat food that is high in calories. The researchers found that a lack of sleep makes people eat sweets and biscuits far more than healthier foods. The researchers also reported that people in the study who did not get enough sleep ate up to twice as much fat as when they had slept for eight hours.

The study was going on 14 men and women in their twenties. They were studied by researchers in two different situations. In one, they spent 8.5 hours in bed each night and had 7.5 hours of sleep. In the other, they spent just 4.5 hours in bed and had 4.2 hours of sleep. The researchers found that in the first situation, the people ate three meals a day as usual. However, in the second situation, where they had been a lack of sleep, they could not stop thinking over and over delicious food. This happened just 90 minutes after they had eaten a meal that gave them with 90 percent of their daily calories.

1.A lack of sleep could make people _______ according to the study.

A tired

B sleepy

C hungrier

D happier

解析：选C。细节理解题。根据第一段第三句Their study shows that a lack of sleep makes people hungrier the following day.可知，故选C。

2.What kind of food do we want to eat if we don’t have enough sleep?

A Baby food.

B Fruit.

C Noodles.

D High-calorie food.

解析：选D。细节理解题。根据第一段第四、五句A lack of sleep produces chemicals in the brain that makes you feel like eating, which also makes us eat more. We want to eat food that is high in calories.可知，故选D。

3.The people in the study were _______ years old.

A 11-19

B 21-29

C 31-39

D 41-49

解析：选B。细节理解题。根据第二段第一句The study was going on 14 men and women in their twenties.可知，故选B。

4.How long after a meal did a man who had been a lack of sleep want to eat again?

A An hour.

B An hour and a half.

C Two hours.

D Two hours and a half.

解析：选B。数字计算题。根据第二段最后一句This happened just 90 minutes after they had eaten a meal that gave them with 90 percent of their daily calories.可知，故选B。

5.The less you sleep, the _______ you eat.

A less

B more

C worse

D better

解析：选B。推理判断题。根据文章内容可知“睡得越少，吃得更多”，故选B。