问题 单项选择题

跖反射的反射中枢位于()

A.腰髓1~2节

B.腰髓2~4节

C.骶髓1~2节

D.骶髓2~4节

E.骶髓2~3节

答案

参考答案:C

阅读理解

The world has many beautiful sounds. We can hear the songs of birds and the laugh of people. We can listen to the cool music and news reports. And it’s all because of our ears! They bring us a world of sounds.

But some people can’t hear any sound at all. Some are born deaf. Others can hear well in their childhood, but too many loud sounds hurt their ears later on.

Many people in China can’t hear ordinary sounds clearly. A large number of them are children. Most of them are born with good hearing. But six children of every 1,000 have hearing problems when they are born. And if a child has hearing problems, he or she usually will also have some learning problems at school.

A lot of things can cause hearing problems. For example, too much earwax is not good for our hearing. And noise louder than 85 decibels (分贝) can hurt our ears and make us lose our hearing for a short time or even for ever.

Hearing is important for all of us. So we should do our best to give our ears special care. Don’t forget to do the following:

● Try to stay away from places with too much noise. If you have to go, wear earplugs. A pair of good earplugs can cut the noise by 30 decibels.

● When swimming, remember to put earplugs into your ears to stop water from getting in.

● Never put anything sharp into your ears. If you think you have too much earwax, ask your mum or dad to help you clean it out.

Keep these things in mind! Then you won’t be saying “WHAT? WHAT?” when you are older.

小题1:What does the underlined word “earwax” mean in the passage?

A.耳膜

B.耳鸣

C.耳垢

D.耳疾小题2:In the first paragraph, the writer wants to ___________.                    

A.tell us many beautiful sounds

B.describe the uses of ears

C.explain the kinds

D.show the importance of ears小题3:Which of the following is NOT mentioned by the writer?

A.Hearing problems caused by diseases.

B.People with hearing problems.

C.Ways to protect our ears.

D.Danger of loud noise.小题4:Hearing problems may be caused by _________.                       

A.a little earwax

B.learning problems at school

C.noise louder than 85 decibels

D.earplugs that can only cut noise by 15 decibels小题5:The underlined sentence means ________.                          .

A.when you get older, you know it’s not polite to ask “What?”

B.when you get older, you still have good hearing

C.when you get older, you won’t ask questions

D.the older you are, the fewer questions you’ll have

       下图是乔冠华(图左)和黄华(图右)在一次会议上的开怀大笑,美国纽约某报特别为此写了文章《乔的微笑》。 请回答:

(1)这一特定的历史时刻出现在哪次会议?

                                                                                                                                                             

(2)令身为中国外交部副部长的乔冠华如此开心的事件是什么?这一件事成功的原因是什么?

                                                                                                                                                             

                                                                                                                                                             

(3)请举出19世纪70年代我国外交工作取得的重大突破。