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(shù)) 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(xué)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(dān)心這可能會帶來一些不好的結(jié)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(xué)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(dǎo)致好結(jié)果，也可能導(dǎo)致壞結(jié)果，所以選A。
練習(xí)冊系列答案
相關(guān)習(xí)題

科目：初中英語 來源：不詳 題型：閱讀理解

On Sunday , April 22nd , people all over the world take time out to appreciate the earth that we all share .It’s Earth Day , a special day to learn about our planet and how to take care of it .
On Earth Day , some people listen to speeches about the environment . Others help clean up their offices or save water and electricity at home .Your parents may even decide to take a day off from driving their cars .
The idea for Earth Day came from a U.S. Senator(參議員) . He was worried about pollution and the health of plants and animals . And the idea quickly caught on (流行起來) . In 1970 , the first Earth Day was celebrated . More than 20 million people in cities all over the U.S. took part in it .Since then, Earth Day has been used to educate people about their roles in taking care of our planet .
Now , Earth Day has become a worldwide celebration. In 1990, two hundred million people from 140 countries took part in clean-ups , tree planting and other environmental events on  Earth Day .  
小題1:Earth Day is a special day to learn about our planet and          .
A．how to pay attention to the earth
B．how to learn English
C．how to go to the moon
D．how to make use of time
小題2:On Earth Day , we are told to           .
A．go shopping
B．save water and electricity at home
C．listen to music
D．drive our cars
小題3:The idea for Earth Day was given by a __________ from America .
A．farmerB．teacherC．scientistD．senator
小題4:According to the passage ,the first Earth Day was celebrated in____________ .
A. 1990, the U.S.A.              B. 1970, Beijing
C. 1970, America                D. 1990, America
小題5:Why has Earth Day become a worldwide celebration ? Because __________.
A．Earth Day is on Sundays .
B．we can sing songs on Earth Day
C．there are so many people on Earth Day
D．Earth Day can teach people how to take care of our planet

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解

Many people go to school for education. School education is very important and useful, but no one can learn everything from school. A teacher, no matter how much he knows, can't teach his student everything. His work is to show his students how to learn .He teaches them how to read and how to think. So much more is to be learned outside school by students themselves.
It’s always more important to know how to learn by oneself than to learn some facts or formulas(公式) by heart. It’s quite easy to learn some facts in history or a formula in maths, but it’s very difficult to use them. Edison and Einstein didn’t get everything from school, but they were all successful. They invented so many things. The reason for their success is that they knew how to study. They read many books outside school. They worked hard all their lives, wasting not a single moment. The most important thing is that they know how to use their brains（大腦）.
小題1:Students can’t learn everything in school because _____________.
A．the teacher doesn’t know much
B．the teacher can only teach them how to read and write
C．the teacher would not like to teach
D．there are still many things for the students to learn outside
小題2:A teacher’s work is _________________
A．to teach all subjectsB．to teach everything
C．to teach the students how to read and thinkD．to work hard
小題3:To know how to____is much more important than facts or formulas by heart.
A．work out maths problemsB．remember all the facts
C．study scienceD．study
小題4:Why did the famous scientists become successful ? Because__________
A．they knew how to study
B．they remembered all the formulas
C．they didn’t get everything from school
D．they didn’t know how to use their brains
小題5:Which is WRONG according  to the passage?
A．Outside school study is as important as school study
B．It’s more important to know how to learn than only remember some facts and formulas.
C．It’s very easy to use a formula in working out a maths problem.
D．It’s helpful to read more books outside school

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解

Early to bed, early to rise, makes a man healthy, wealthy and wise.
This is an old English saying. Do you know it before? It says that we must go to bed early and get up early in the morning. Then we should be healthy. We should also be rich (wealthy) and clever (wise).
This is true. The body must have enough sleep to be healthy. Children of a young age should have ten hours’ sleep every night. Children who don’t have enough sleep can’t do their work very well. They will not be wise and they may not become wealthy!
The body also needs exercise. Walking, running, jumping, swimming and playing games are all exercise. Exercise keeps the body strong.
Exercise also keeps the blood（血液）moving around inside the body. This is very important. Our blood takes food to all parts of our body. The head also needs blood. Exercise helps us to think better!
小題1:If a child doesn’t have 10 hours’ sleep every night, he _____.
A．will become wise
B．won’t do well in his work
C．will have to sleep in the daytime
D．can’t go to school in time
小題2:A person needs exercise because ______.
A．it makes him healthy
B．he has a lot of homework to do
C．it doesn’t need time
D．it is fun to do exercise
小題3:Exercise makes the _______ move quickly and smoothly.
A．bodyB．bloodC．childrenD．head
小題4:Which of the following is not true?
A．Exercise is good for a person’s head
B．A student should have 10 hour’s sleep.
C．It’s good for you to get up early and go to bed early.
D．If you have enough blood, you’ll be wise

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解

Tigers are strong and dangerous animals. But now they are in danger.
In the past, there were eight kinds of tigers in the world. But during the 20th century, only five were left. The number of Siberian tigers (東北虎) was about 300, but now it is less than 22. They’re in danger of dying out. If the government does nothing, we won’t be able to see them in ten to twenty years.
In order to stop people from hunting and killing wild tigers, and in order to make wild tigers more, the World Wildlife Fund (世界自然基金會) has started a program (項目) recently (最近). China and twelve other countries joined it.
However, it’s not enough. Remember that nature is a food chain (鏈). If we hurt and kill too many wild deer and pigs, wild tigers will die out because of hunger (饑餓). So the most important thing is to save the animals that tigers eat. In order to protect the wild tigers, we need call on (號召) more people to stop eating, hunting and killing wild animals.
根據(jù)短文內(nèi)容，選擇正確答案。
小題1:During the 20th century, _______ kinds of wild tigers died out.
A．3B．5C．8D．20
小題2:The number of the wild Siberian tigers reduced (減少) about _______.
A．5%B．22C．93%D．30%
小題3:Wild tigers will be in danger of dying out without _______.
A．pigsB．deerC．peopleD．A and B
小題4:Which of the following statements is NOT true?
A．There are less than 22 wild Siberian tigers now.
B．There are twelve countries in the World Wildlife Fund.
C．Wild tigers mainly feed on pigs and deer.
D．It’s our duty to protect the wild tigers.
小題5:The passage mainly tells us _______.
A．why and how do we protect the wild tigers
B．The government does everything they could to protect the wild tigers
C．the wild tigers will die out in ten to twenty years
D．the most important thing is to save the animals that tigers eat

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解

In the world, soccer (or football) is the most popular sport. This is because many countries have wonderful teams for the World Cup. The World Cup is held every four years.
To remember the 2002 FIFA World Cup, children from different countries and more than 60 children from different Japanese schools came together and spent three weeks drawing a big picture called“Dream (夢幻) World Cup”in Japan. The children drew animals, flowers and people playing soccer under bright blue sky. They wished each football team good luck by drawing the flags (旗幟) of all countries that would take part in the World Cup in Japan and South Korea. The picture was put up in a park near a playground in Yokohama.
Are you a football fan? The World Cup makes more and more people interested in football. Teenagers like playing and watching football. Many of them love some football stars so much that they get pictures of their favorite players such as, Figo, Oven and Pauleta. And they put the pictures up on the walls of their rooms. That is the way to show their love for the World Cup.
根據(jù)短文內(nèi)容，選擇正確答案。
小題1:If a country wants to take part in the World Cup, it must have _______.
A．many football fansB．a(chǎn) very good football team
C．many football playersD．a(chǎn) big playground
小題2:The next World Cup will be held in _______, after 2006.
A．2007B．2008
C．2009D．2010
小題3:From the passage, in the picture children drew many things except _____.
A．some football starsB．people playing football
C．a(chǎn) sunny skyD．flowers
小題4:In “Dream World Cup”, the children drew the flags of some countries ___.
A．to show their love for their own countries
B．to tell the people their stories
C．to show their good wishes for the football teams
D．to show their new ideas about football
小題5:Many teenagers (青少年) own pictures of some football stars because ___.
A．they are interested in footballB．they are football fans
C．they think their favorite players are greatD．A, B and C

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解

"Depend on yourself" is what nature says to every man. Parents can help you. Teachers can help you. Others still can help you. But all these only help you to help yourself.
There have been many great men in history. But many of them were very poor in childhood, and had no uncles, aunts or friends to help them. They couldn't depend on them for education. They saw how it was, and began to work with their efforts.
One of the most famous teachers in England used to tell his pupils, "I can't make worthy men of you, but I can help you make men of yourselves."
Some young men are not the best in anything, and they are to be pitied(值得同情的). They can never do things successfully if they don't see their weak points and change their courses(做法). They are nothing now, and will be nothing as long as they live if they don't follow the advice of their parents and teachers, and depend on their own efforts.
小題1:"Depend on yourself" in this passage means ________.      
A．depend on your own effortsB．depend on nature
C．wait for others to helpD．depend on your parents
小題2:Many of the great men in history succeeded because________.  
A．they were very poor in childhood
B．they could not depend on schools for an education
C．they made great efforts to learn and work
D．they wanted very much to become famous
小題3:According to the famous teacher in England, a teacher can _______.     
A．make his pupils worthy men
B．teach his pupils everything he knows
C．help his pupils make themselves useful men
D．make his pupils men of strength and courage
小題4:If young people depend on their own efforts, ____________  
A．they are to be pitied
B．they can never be successful
C．they are nothing now and will be nothing in the future
D．they can be successful in their work
小題5:The main idea of the passage is that         .
A．we should depend on our parents and teachers
B．we can depend on our friends and relatives
C．a(chǎn)ll great men in history were poor when they were young
D．we can't depend on our parents or teachers, but we can get advice from them

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解



China's first moon rover (月球車), Yutu, set off from the lander early on December 15, several hours after the Chang'e-3 probe (探測器) soft-landed on the moon surface.
The 140 kg six-wheeled rover touched the moon surface at 4:35 a.m., leaving deep lines on the loose moon land. This was recorded by the camera on the lander and the images were sent to the earth, according to the Beijing Aerospace Control Center. After that, the rover and lander will take photos of each other and start their own science explorations.
Earlier this morning, engineers made final checks of the environment of the landing area and the situation of the probe. Yutu, reached its solar panel (光板) and started to drive slowly to the moon at 3:10 a.m.. It took Yutu nearly a whole hour to complete the simple task.
Chang'e-3 landed at the Bay of Rainbows on the moon, at 9:11 p.m. on December 14, making China the
third country in the world to carry out such a mission (執(zhí)行此類任務(wù)) after the United States and Russia.
In old Chinese tales, Yutu was the white pet rabbit of Chang'e’s. The name for the rover was selected following an online survey that collected several million votes from people around the world.
The rover, 1.5 meters long with its two wings folded (折疊), 1 m in width and 1.1 m in height, is a perfect robot controlled by the command center from the earth. It will face challenges including temperature differences of more than 300℃ on the moon.
Yutu will do some research and look for natural resources (資源) for three months, while the lander will conduct an exploration at the landing place for one year. Then they will have a good rest on the moon and will not be used for a long time until China’s next probe visits the moon again.
小題1: Which is the best title for the passage above?
A．The first rover on the moonB．The tale of Chang’e
C．The journey to the moonD．Yutu explores the moon
小題2:Which is the correct order of the following events?
a. The 140 kg six-wheeled rover touched the moon surface.
b. The rover and lander will take photos of each other.
c. Yutu started to drive slowly to the moon.
d. Chang'e-3 landed at the Bay of Rainbows on the moon.
A．a(chǎn)-b-c-dB．c-d-a-bC．d-c-a-bD．c-a-b-d
小題3:What does the underlined word width mean in Chinese?
A．智力B．寬度C．重量D．長度
小題4:Which of the following is true according to the passage?
A．The moon had been visited by only two countries before 2013.
B．Yutu is a perfect robot under the control of its own computer.
C．Yutu and Chang’e will return to the earth after the one-year mission.
D．Chang’e-3 is 140 kg in weight.
小題5:There will soon be a second moon rover to explore the moon. Which is its proper name?
A．Chang’e-4 B．Yutu-2 C．Shenzhou-11 D．Tiangong-2

查看答案和解析>>

科目：初中英語 來源：不詳 題型：完形填空

Project Hope is a social service program to help poor students. It started on October 30th, 1989. It aims to bring schools into poor areas of China, and to help poor families afford an education for their children.
In the past sixteen years, Project Hope has raised about 3 billion yuan from people at home and abroad. It has paid for the education of 2.5 million poor students and sent 2.3 million students to high schools. Minmin comes from a poor family. She has received help from Project Hope. Without the help of project Hope, she couldn’t go on her studies. Project Hope changes her life. She has been a college student for two years. With the money, Project Hope has built thousands of schools and libraries and trained 2300 teachers. But 40 million children from poor families still need help, so Project Hope still has a lot of work to do.
小題1: Project Hope is a social service program to _______________.
A. help homeless people    B. help poor students       C. help disable children
小題2:Project Hope started ___________.
A. in 1998             B. 14 years ago            C. in the past sixteen years
小題3: Minmin has been a college student with the help of ___________.
A. Project Hope            B. her classmates          C. her teachers
小題4:Which of the following is TRUE according to the passage?
A. Project Hope has raised money to build ring roads.
B. Project Hope has raised money from Home and abroad.
C. Project Hope has trained 2.5 million teachers.
小題5:The writer wrote this article to ______________.
A. tell us what Project Hope does
B. tell us how poor China is   
C. raise money

查看答案和解析>>

同步練習(xí)冊答案