Rufus spends half an hour ________ his homework,thanks to the government's policy to lighten the burden on the students．

1. A.
   with
2. B.
   in
3. C.
   do
4. D.
   on

Schools of Nangtong, Jiangsu Province start the morning classes an hour later than before. That’s, they begin the first class at about 8:30 a.m. This helps students feel less tired. The students are happy about the change.
Liu Ming said,“I’m glad that we don’t have to get up so early.”
Wu Hongli feels the same. She said that would be good for her health. “I used to get up at 6:30 a.m. I had to drink coffee every night, or I would feel too sleepy to finish my homework, ” said Wu.
Many teachers agree that the change helps students learn better. “Students used to doze（打瞌睡） in the first two classes in the morning,” said Huang Shan, an English teacher. “But now they are full of energy in class and learn much better than before.”
However, some parents are worried that more sleep means less learning. There used to be five classes in the morning. Now there are only four.
In fact, every coin has two sides. So does the change in the school timetable.
根据短文内容，判断下列句子正误，正确的涂“A”，错误的涂“B”。（10分）
【小题1】Schools of Nantong used to begin the first class at about 7：30a.m.
【小题2】Some students and parents feel worried about the change in the school timetable.
【小题3】Wu Hongli enjoys drinking coffee at night.
【小题4】The English teacher thinks the new timetable does good to the students’ study.
【小题5】“Every coin has two sides” means “凡事皆有利弊” in Chinese.

Do you get enough sleep? With so much homework it's often difficult to get the rest you need. But you need to try， because sleep keeps you healthy and it stops you getting fat.

Recently， a group of US scientists did a study (调查) of kids aged between 8 and 13. The study found that if kids sleep for just one extra (额外的) hour each day, the chance of their getting fat is cut by about 30 percent .

Why? When people don't get enough sleep, they become tired. When they are tired, they don't exercise enough. Also， kids like snacks: If they are awake (醒着的) an extra hour or two each day，they have more time to eat snacks or other unhealthy foods.

So， how much sleep should you get? Scientists suggest 10 to 11 hours a night for kids aged 5 to 12. For older kids, eight to nine hours will do.

1.How many reasons are given why people might get fat without enough sleep?

A. 3.     B. 2.     C. 1       D. None.

2.If you are under 10， how long do the scientists advice you to sleep?

A. 10 to 11 hours.     B. 8 to 9 hours.   C. 8 to 13 hours. D. As long as possible.

3.Where was the study done by the scientists?

A. In China. B In Britain. C. In America. D. In Japan.

4.What does" eight to nine hours will do" mean?

A. Eight to nine hours' sleep will be good and enough.

B Eight to nine hours' sleep will be too long.

C. Eight to nine hours' sleep will help get fat.

D. Eight to nine hours' sleep will help eat snacks and unhealthy foods.

5.What does the passage talk about?

A. How to get long sleep.

B How to keep fat.

C. Enough sleep makes people healthy and slim (苗条)

D. Long sleep makes people healthy and slim.