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.

完形填空，用你的智慧将下面的文章补充完整，千万要细心哦

Ann: Hey, Rose! Let’s  1   a movie.

Rose: Hm, I don’t know…

Ann: Well… let’s go to see The Edge. It’s  2   thriller.

Rose: Un, well, I  3   like thrillers. I don’t want to go, but  4   .

Ann: Ok. Where’s James?  5   he want to go?

Rose: I don’t  6   .

Ann: Hi, James.  7   you want to go to a movie? It’s The Edge.

James: Is  8   a comedy? I like comedies  9   action movies.

Ann:  10   , it’s thriller.

James: No, thank you. Let’s go to an action movie.

1.A. go to              B. go on       C. to go to      D. to go

2.A. a                  B. an          C. the           D. to go

3.A. not                B. don’t      C. doesn’t      D. am not

4.A. thanks             B. thanks you  C. thank your    D. thank

5.A. Is                 B. Are         C. Does          D. Those

6.A. no                 B. not         C. now           D. know

7.A. Is                 B. Are         C. Do            D. Does

8.A. it                 B. its         C. it’s         D. it is

9.A. but                B. or          C. and           D. for

10.A. Not               B. Doesn’t    C. No            D. Don’t

从方框中选出单词，用它们的适当形式填空，是短文意思正确通顺（每词只能用一次）

help  please  money  sell  right   wrong   one   they   so   teach   but   high

George Wilson was the owner of a watch shop .One day he told his son James, “I will  1   you all I know about watches .” For the  2 few weeks , James looked after the front of the shop . He wored hard and was 3  to the customers( 顾客). George was very 4  with him.

After about six months , James said to his father, “Is there anything else you want to teach me?”

“Yes,” said George , “ It’s time for me to teach you how to make  5 ..”

“I know that ,”said James, “You buy watches at one price and sell them at a  6   price.That’s how we get so much money .”

“That’s ture . 7  we don’t make most of the money from it .” He picked up a watch from the counter (柜台). “What do you think of this watch?”

“That’s a cheep watch . We can only get a few dollars from 8  it .”

“You are 9, my son ,” George said , “Those cheap ones get us more money than any other watch in the shop.”

“I don’t understand,” James said .

“Becausa they are really cheap , they are always breaking, and we make our money from fixing 10.”

Mary didn’t understand such sentences as “She is blue today”, “You are yellow”, “He has a green thumb”, “He has told a white lie” and so on. And she went to the teacher Mrs. James for help.

Mary:    Mrs. James, there is a colour in each of the sentences. What do they mean?

Mrs. James: In everyday English, Mary, blue sometimes means sad, yellow afraid. A person with a green thumb grows plants well and a white lie is not a bad one.”

Mary:     I’m afraid I don’t understand them all. Would you give me an example for “a white

lie”?

Mrs. James: Certainly. Now I just give you some cakes. In fact you don’t like it, but you don’t want to let me know it. Instead you say, “No, thanks. I’m not hungry.” That’s a white lie.

Mary:      It sounds very interesting. Thanks very much.

Mrs. James: You are welcome. Colours are meaningful. I think you will meet more sentences like these in the future. Please come to me if you have any questions.

1.Blue sometimes means sad in _______________ English.

2.I don’t have a green thumb, so all my plants ________________.

3.David is yellow and he is ___________ to climb the tall tree!

4.He didn’t like me to know ___________ of the accident. He told me a white lie at last.

5.He is ______________today. He is told that his father is seriously ill.