On June 26, 2000, two scientists, called Francis Collins and Craig Venter, told the world that they could now read the whole “map” of the human body: DNA. DNA is something that everybody has, and it tells the body what to do. DNA is the reason that we look like our mother and father, because we get some of their DNA to make our own.

People have been trying to understand the human body for a long time. In 1860, Gregor Mendel discovered a special reason why we look the same as other people in our family. It is because of small things named “genes” in our body. In 1953, James Watson and Francis Crick made another discovery and found out that those small parts are real messages written in the DNA with a special language.

　　In 1961, Marshall Nirenberg and Johann Matthaei found a message in DNA showing how DNA tells the cell (细胞) to build its parts. Scientists have now found all the words in the DNA map, but we still do not understand what they all do. By understanding what just one “word” means, we can help save more people from several illnesses.

　　Most people hope that this will help make better medicine and help sick people. Other people worry that when people begin to know more words and find out lots of other information, we might use it in a wrong way, just to make people more attractive, or stop sick people from getting jobs. Man would have to meet a lot of trouble if DNA technology (技术) wasn’t limited (限制) in use.

1.When did we first know why we look like other people in our family?

A. In 1860. B. In 1953. C. In 1961. D. In 2000.

2.What did the two scientists first discover in 1961?

A. The “map” of DNA. B. A new illness.

C. The language of DNA. D. A message of DNA.

3.What can we do if we understand some “words” of the language inside the body?

A. Make people get new jobs.

B. Make medicine for illnesses.

C. Make maps of human.

D. Make people less attractive.

4.What do people think about this work?

A. It can cause good or bad results.

B. It can cause only good results.

C. It can cause good results but won’t work.

D. It can cause only bad results.

Now and then we all get ill. Then we usually go to see a doctor. Doctors know a lot about what makes us ill. They may give us something to take. The medicine often makes us well again.
But sometimes the doctor’s medicine doesn’t work. A sick person does not get well. The pain will not go away. This happened to one man. He was in hospital, but he was not getting well. Then he found a new “doctor” inside himself. This “doctor” was his own sense of humor(幽默感). He saw funny films. He read funny books. And something wonderful happened. Laughing took away his pain. Then he was able to sleep and rest. His own happy feeling was his best “medicine”. His doctor thought so, too.
Another man was ill, and he had a terrible pain in his back. The doctors could not stop it from hurting. So the man began to “picture” his pain. In his head he “drew” a picture of a dog. He imagined it as a real dog. And he made friends with the dog. And his pain went away!
These stories may surprise you. But more and more people are getting well in this way. So visit the “doctor” inside you and you can stay happy and well.
根据短文内容，按要求完成各题
【小题1】Does medicine always work?
　　                                                                       
【小题2】Who is the first sick man’s new “doctor”?
　　                                                                                    
【小题3】Who made the second patient well again, the doctor or the “dog” in his head?
　　                                                                       
【小题4】Why does the writer ask us to visit the “doctor” inside our head?
　　                                                                       
【小题5】What can you learn from this story?