11.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 parents,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 I860,Mr Mendel discovered why we look the same as other people in our family.It is because of small things called"genes"(基因) in our body.In 1953,two scientists,Watson and Crick,found out that those small parts are really messages.They're written in the DNA with a special language.
In 1961,another two scientists found the first"word"that they could understand in that language.It
shows how DNA tells the cell (細(xì)胞) to build its parts,(有幾個(gè)單詞看不清) 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 to save people from several illnesses.So the more we understand,the more doctors will be able to do.
Most people hope that this will help to make better medicine and help sick people:Other people worry that when we learn more"words"and find out more information,we will use it in the wrong way,just to
make people more attractive (有吸引力的),or stop sick people getting jobs.Man would have to meet a lot of trouble if DNA technic wasn't limited in use.

31.When did Mr.Mendel discover why we look the same as other people in our family?D
A.In 2000.
B.In 1961.
C.In 1953.
D.In 1860.
32.How can we help sick people if we understand more"words"in the DNA map?A
A.Make better medicine.
B.Make them get jobs.
C.Make maps for them.
D.Make them attractive.
33.Which one is not true according to the article?B
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.
34.What does the underlined word"limited"mean?A
A.有限的 
B.充分的 
C.特別的
D.部分的
35.Where can we probably read the article?B
A.A sports newspaper.
B.A science magazine.
C.A history book.
D.An ad.

分析 文章大意:這是一篇說(shuō)明文,短文簡(jiǎn)要的介紹了DNA的發(fā)現(xiàn)歷史,DNA是整個(gè)人體的"地圖",它是人類所有的東西,它告訴身體該做什么,DNA就是我們看起來(lái)像我們的父母的原因,科學(xué)家一直在研究DNA的組成.還介紹了DNA對(duì)于人類生活的影響及人們對(duì)此的不同意見(jiàn).

解答 31.答案:D.細(xì)節(jié)理解題.根據(jù)第三段In I860,Mr Mendel discovered why we look the same as other people in our family.在1860年,孟德?tīng)柊l(fā)現(xiàn)為什么我們看起來(lái)像我們家族的其他人一樣.可知,是在1860年.選D.
32.答案:A.細(xì)節(jié)理解題.根據(jù)文章的第四段中By understanding what just one"word"means,we can help to save people from several illnesses.的內(nèi)容可知,人們對(duì)DNA信息了解的越多,醫(yī)生們可以做的就越多,他們可以研制出更好的藥來(lái)拯救病人,故選A.
33.答案:B.推理判斷題.根據(jù)文章的第三段So far,scientists have found all the words in the DNA map,but we still don't understand what they all do可知,到目前為止,科學(xué)家們已經(jīng)發(fā)現(xiàn)了DNA上的所有信息,但是我們?nèi)匀徊恢肋@些信息可以做什么,故B選項(xiàng)的"我們已經(jīng)理解了DNA圖譜中的所有單詞."表達(dá)是錯(cuò)誤的,選B.
34.答案:A.詞意猜測(cè)題.根據(jù)句意:如果DNA技術(shù)不_____,人類將不得不面對(duì)許多麻煩.可知,DNA可以進(jìn)行人體克隆,因此如果使用"不受限制",會(huì)有很多麻煩,劃線單詞意思應(yīng)該是"有限的",選A.
35.答案:B.文章來(lái)源題.A份運(yùn)動(dòng)報(bào)紙.B一本科學(xué)雜志.C一本歷史書(shū).D一個(gè)廣告.根據(jù)第一句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是人體的全部"地圖",是人類所擁有的一切,它告訴身體該做什么.可知文章主要介紹DNA的發(fā)現(xiàn)歷史.因此應(yīng)該來(lái)源于科學(xué)雜志.選B.

點(diǎn)評(píng) 閱讀題型,要注重句子與句子之間、段落與段落之間邏輯關(guān)系以及對(duì)篇章的整體理解.根據(jù)所給問(wèn)題選擇正確選項(xiàng)完成試題.

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