题目
题型:不详难度:来源:
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 Matthaci 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 technic wasn’t limited(限制)in use.
小题1:When did we first know why we look like other people m our family?
A.In 1860 | B.In 1953 | C.In 1961 | D.In 2000 |
A. The “map” of DNA. B. A special language.
C. Small parts of DNA. D. DNA
小题3: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.
小题4: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. |
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. |
答案
小题1:A
小题2:C
小题3:D
小题4:B
小题5:A
解析
试题分析:这篇短文简要的介绍了额DNA的发现历史,并介绍了这一发现对于人类生活的影响及人们对此一发现的不同看法。
小题1:根据第二段In 1860, Gregor Mendel discovered a special reason why we look the same as other people in our family.描述,可知选A
小题2:根据第二段and found out that those small parts are real messages written in the DNA 描述,可知选C。
小题3:根据第三段In 1961, Marshall Nirenberg and Johann Matthaci found a message in DNA showing how DNA tells the cell(细胞)to build its parts.描述,可知选D。
小题4:根据第三段By understanding what just one “word” means, we can help save more people from several illnesses.及第四段Most people hope that this will help make better medicine and help sick people.描述,可知选B。
小题5:根据短文最后一段描述,可知可能引起好的或者坏的结果。故选A。
点评:本文浅显易懂,各个小题都能在文中找到适当依据。只要认真阅读短文,注意前后联系,就能顺利完成阅读。文章所设试题主要考察细节查找,做题关键是找出原文的根据,认真核查小题和原文的异同。
核心考点
试题【On June 26, 2000, two scientists, called Francis Collins and Craig Venter, told 】;主要考察你对科普环保类等知识点的理解。[详细]
举一反三
There have been many great men in history. Many of them were very poor when they were young, and had no uncles, aunts, or friends to help them. Schools were few and not very good. They could not depend on them for education. They tried their best to learn something and never gave up till they became well-known. One of the most famous teachers in England used to tell his pupils, “I cannot make worthy men of you, but I can help you make men of yourselves.”
Some young men don’t try their best to make themselves valuable to the human beings. If they see their weak points and change their ways, they can be successful. They are nothing now, and will be nothing as long as(只要) they live, unless they accept the advice of their parents and teachers, and depend on themselves.
小题1:Why did many men succeed?
A.Because they had good education. |
B.Because they wanted very much to become well-known. |
C.Because they worked hard. |
D.Because their families were very rich. |
A.A teacher can make his pupils men of strength and courage. |
B.A teacher can make his pupils worthy. |
C.A teacher can help his pupils become well-known. |
D.A teacher can do nothing. |
A.they are sure to be very famous in the world |
B.they can be successful in their lives |
C.they no longer need help |
D.they are sure to fail |
A.He thinks highly of those who are working hard to be successful. |
B.He thinks highly of parents and teachers. |
C.He wants to be a famous scientist. |
D.He thinks highly of those who are poor. |
Middle school days are both fun and busy. Students spend __1__their teachers. Students spend their days in class, ___2__to the interesting or boring words of their teachers. At break(休息时间), they __3__ themselves by running or talking with each other. But ___4_should students spend their__5__time after school?
In western countries,___6_is normal(很正常的) for students to have a part-time _7_after school or on weekends. Students can make their _8_ money and learn more about the “__9_world”. They enjoy the independence(独立) and money, and their parents enjoy the __10_house. However, it seems that, in China, parents__11__so much about their children’s studies that they would like to _12_ their children spending most of their time _13__for all those exams. It is natural for Chinese parents to feel that way, but I think everything should keep balanced. Sometimes, western school children__14__long hours after school to make money, so they__15__too tired to listen in class or do their homework. But Chinese students spend so much time on their studies that anything else becomes less important.
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Monday | Review some English spelling rules. |
Tuesday | Study prepositions(介词)to show place. |
Wednesday | Read the useful sentences used in a telephone conversation. Write a simple conversation. |
Thursday | Review the prepositions that I have learned. Practice them in the evening. |
Friday | Listen to the English radio program for one hour. Write nothing down. Just listen. |
Saturday | Review all of the new words I have learned this week. Write a story with the new words. |
Sunday | Read an English story. Do exercise. Summarize(概述) the story in my notebook. |
A.sounds | B.numbers | C.sentences | D.words |
A.Monday | B.Tuesday | C.Wednesday | D.Thursday |
A.listening | B.speaking | C.reading | D.writing |
According to a survey, 24% of the Grade 8 students in Beijing have classes at the weekend. Over 40% of the middle school students have less than eight hours’ sleep each night because of study.
And this isn"t only in Beijing. Ji Chunying is a Grade 9 student in Guangzhou. The 14-year-old girl has to get up at 6:45 am on Saturday. Then she has a whole day of classes. On Sunday, she goes to extra classes for math and physics.
But Ji doesn"t complain. She says her classmates all work very hard.
Finding time to have fun
Zhao Yang, 13, is from Dalian, Liaoning. As a Grade 8 student, Zhao"s weekend is less busy. But he still spends Saturday in school. On Sunday, after finishing homework, he plays basketball. "I feel happy because I still have time to do the things I like," he said.
Some students are much luckier. They don"t have to go to school on the weekend.
Ding Yi, a Grade 8 student from Laiwu, Shandong, is one of them. And she"s a top student.
During the weekend, Ding usually gets up at 8 am. Then she spends some time doing homework. After that she is free to go shopping or watch TV.
Ding said her mother once wanted her to try extra classes. But when they asked Ding"s teacher about it, the teacher said it was unnecessary.
"My teacher said I don"t need to push myself too much. Learning well at school is enough," Ding said. "I feel pretty lucky."
小题1:Over 40% of the middle school students have less than eight hours sleep each night because of ___________.
A.playing computer games |
B.playing with friends |
C.busy study |
D.watching TV |
A.2. | B.3. | C.4. | D.5. |
A.Some middle school students can enjoy their weekend. |
B.All the students in China are busy studying on the weekend. |
C.Every student in China has to go to extra classes on the weekend. |
D.All the students complain about their busy weekend. |
A.a story of science | B.school notice |
C.short play | D.news report |
Luckily, there are some free schools for them, but they are not enough. Ten-year-old Li Xin is one of the lucky girls who get a chance to study in one of these schools. She is very happy. She studies in a school specially for migrant workers’(外来务工人员的)children. For children like Li Xin who don’t have enough money, these free schools are their best choice, because they have free classes, textbooks, uniforms and meals in the schools.
But there is a long way to go. The free schools for children from migrant workers’ families are not enough because to run such a school is not easy and needs lots of money. A school officer said they needed at least one million yuan to run the school. “Luckily, some people and companies donate(捐赠)money, used books and a lot of other things to help us. There are also some volunteers teachers,” he added.
Anyhow, we must try to give these children an equal(平等)chance to get better education so that we can make our society harmonious(和谐的).
小题1:From the passage, we know that Li Xin’s parents used to be __________.
A.workers | B.teachers |
C.officers | D.farmers |
A.textbooks | B.uniforms |
C.computers | D.meals |
A.奔跑 | B.经营 | C.考虑 | D.收购 |
A.what jobs migrant workers can do in big cities |
B.the development of big cities |
C.helping migrant workers’ children go to school |
D.what difficulties those free schools face now |
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