DNAisthewhole“map”ofthehumanbody.Itissomethingthatallhu...

問題詳情：

DNA is the whole “map” of the human body. It is something that all humans have, 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 that there is a special reason why we look the same as other people in our family. It is because of small things called “genes” that we have in our body, in 1953, James Watson and Francis Crick made another discovery and found out that those small parts are really messages written in DNA in a special language.

In 1961, Marshall Nirenberg and Johann Matthaei found the first “word” that they could understand in that language, showing how DNA tells the cell to build its parts. This meant that one day we would be able to read all the messages that a human body gets from its parents’ bodies. 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 people from several illnesses.

Most people hope that this will help to make better medicine and help people who are very ill. Other people worry that when we learn more words and find out lots of other information, we will use it in the wrong way, just to make people more attractive, or stop sick people getting jobs.

did Mr Mendel discover why we look the same as other people in our family?

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

2. What did the two scientists find in 1961?

A. They found all the words in the DNA map.

B. They found small things called “genes” in our body.

C. They found the first “word” they could understand in that language.

D. They found those small parts are written in the DNA with a special language.

can we help sick people if we understand more “word” in the DNA map?

A. Make better medicine.           B. Make them get jobs.

C. Make maps for them.            D. Make them attractive.

h one is NOT true according to the article?

A. We look like our parents because of “genes” in our body.

B. We have understood what all the words in the DNA map do.

C. DNA is the whole “ map” of the human body.

D. DNA tells the cell to build its parts.

do people think of research about DNA?

A. It can be only bad.                B. It can be only good.

C. It can be good but won’t work.      D. It can be good and bad.

【回答】

1D  2C  3A  4B  5D

知識點：日常生活類

題型：閱讀理解