根据句意及所给的首字母或中文提示完成单词，使句意完整。每空只能填一词。
【小题1】One of my             (牙齿) hurts badly. I have to see a dentist.
【小题2】Could you             (借) me your bike? Mine is broken.
【小题3】Mr. Smith lives on the             (第十二) floor, and the lift can take you there.
【小题4】The government has done everything to             (保护）the students from any danger.
【小题5】There are many other ways to learn English             (除了) reading aloud.
【小题6】Yesterday morning I r            a letter from my parents.
【小题7】We should keep q            in the reading room.
【小题8】She got up very late. So she hurried to school w            breakfast.
【小题9】Stop smoking. It’s bad for your h           .
【小题10】Our city is f            for its clear air，beautiful mountains and blue sea. It attracts many tourists every year.

根据句意及所给的首字母或中文提示完成单词，使句意完整。每空只能填一词。

1.One of my             (牙齿) hurts badly. I have to see a dentist.

2.Could you             (借) me your bike? Mine is broken.

3.Mr. Smith lives on the             (第十二) floor, and the lift can take you there.

4.The government has done everything to             (保护）the students from any danger.

5.There are many other ways to learn English             (除了) reading aloud.

6.Yesterday morning I r            a letter from my parents.

7.We should keep q            in the reading room.

8.She got up very late. So she hurried to school w            breakfast.

9.Stop smoking. It’s bad for your h           .

10.Our city is f            for its clear air，beautiful mountains and blue sea. It attracts many tourists every year.

A smile will tell people around you that you are a kind and friendly person. However, many people don’t smile because they think they have ugly(丑陋的) teeth. For example, one of my classmates, Mike, doesn’t have very nice teeth, so that is why he seldom opens his mouth. He even says that he has lost confidence(自信) because of his teeth. So it is very important for us to look after our teeth. In fact, a lot of people have this problem. Some people’s teeth are damaged(破坏) because of bad habits, like heavy smoking, eating too much sugar or not brushing teeth often. If your teeth are in bad shape, you should see a dentist(牙医) and ask for help. He can help improve your teeth and tell you how to take care of them.

Smiling can help you to feel more confident and make other people think of you as a more friendly person. If you want to keep healthy, you should not only smile but also laugh. An Indian doctor called Kataria said that children should laugh about 300 times a day, while adults should laugh between 7 and 15 times a day. So please smile and laugh now!

49. What has made Mike lose his confidence?

　 A. His bad habit.　　　　　　　 B. His bad teeth.　　

C. Not smiling. D. Eating too much sugar.

50. Many people don’t smile because 　　　　.

　 A. they don’t like smiling　　　　 B. they think they are ugly

　 C. their teeth are not beautiful　　 D. they can’t open their mouth

51. What can a dentist do according to the passage?

　 A. A dentist can tell you how to improve your bad teeth.

B. A dentist can help you to take care of your bad teeth.

　 C. A dentist can tell you how to brush your teeth.

　 D. Both A and B.

52. How many times shoud a child laugh every day in Doctor Kataria’s opinion?

　 A. Either 300 or 30 times a day.　　 B. Betwwen 7 and 15 times a day.

　 C. About 300 times a day.　　　　　 D. Only 30 times a day.

—I have a toothache.

—You should            .

A. have a good sleep                     B. see a dentist

C. drink hot water              D. play basketball