Question

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 ugly teeth. For example, one of my classmates, Mile, doesn’t have very nice teeth, so that is why he seldom opens his mouth. he even says that he has lost confidence 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 inherit teeth problems from their parents, while others’ teeth are damaged because of bad habits, like heavy smoking, eating too much sugar or not brush-ing teeth often. If your teeth are in bad shape, you should see a dentist and ask for help. They can help improve your teeth and tell you how to take care of then.
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 Katarina said that young children should laugh about 300 times a day, wile adults should laugh between 7 and 15 times a day. So please take this chance to smile and laugh now!
根据短文内容，选出一个最佳答案填入题前括号内。
1. What has made Mike lose his confidence?
A. His bad habit.  B. His bad teeth.      C. Not smiling.        D. Eating too much sugar.
2. 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 mouths
3. 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.
4. If you want to keep healthy, you had better    .
A. not smile often                         B. laugh all the time 
C. neiter smile nor laugh                  D. smile and even laugh often
5. How many times should a child laugh every day in doctor Kataria’s opinion?
A. Either 300 or 30 times a day.               B. Between 7 and 15 times a day.
C. Around 300 times a day.                     D. Only 30 times a day.

Answer 1

B   C   D   D   C

解析1.      B 根据Mile, doesn’t have very nice teeth, so that is why he seldom opens his mouth可知他是因为牙齿不好而不自信，故选B。
2.      C 根据many people don’t smile because they think they ugly teeth可知好多人不笑是因为他们觉得自己的牙齿丑，故选C。
3.      D根据They can help improve your teeth and tell you how to take care of then可知他们（牙医）不仅可以帮你改善你的牙齿也可以告诉你如何照顾牙齿，故A,B都是其中的一个要点，选D。
4.      D根据If you want to keep healthy, you should not only smile but also laugh可知要保持健康不仅要微笑而且要大笑，故选D。
5.      C细节题。根据An Indian doctor called Katarina said that young children should laugh about 300 times a day可知每天应该笑300次一天，故选C。