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 (細胞) 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 (技術) wasn’t limited (限制) in use.
小題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.
小題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.
小題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.
小題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.

小題1:D
小題2:D
小題3:B
小題4:A

試題分析：短文大意：本文簡單介紹了科學家對DNA的研究歷程。大多數(shù)人希望這將有助于制造更好的藥物救治生病的人。其也有人擔心這可能會帶來一些不好的結果。
小題1: 細節(jié)理解題，根據(jù)第一段首句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 和最后一句DNA is the reason that we look like our mother and father,可知我們第一次知道我們?yōu)槭裁纯雌饋硐窦彝ダ锏钠渌耸窃?000年，所以選D。
小題2:細節(jié)理解題。根據(jù)第三段首句In 1961, Marshall Nirenberg and Johann Matthaei found a message in DNA showing how DNA tells the cell  to build its parts可知這兩位科學家子啊1961年首次發(fā)現(xiàn)了DNA的信息，所以選 D。
小題3:細節(jié)理解題。根據(jù)Most people hope that this will help make better medicine and help sick people.可知選B。
小題4: 細節(jié)理解題。根據(jù)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.可知人們認為這項工作可能導致好結果，也可能導致壞結果，所以選A。
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