久久影视三级福利片,俺来俺也去www色在线观看,av电影高清在线观看

精英家教網 > 初中英語 > 題目詳情

On June 26, 2000, two scientists, called Francis Collins and Craig Venter, told the world that they could 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 Matthaci 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 technic wasn’t limited（限制）in use.
小題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

小題2:What does the underlined word “ genes” mean?
A. The “map” of DNA.                B. A special language.
C. Small parts of DNA.                D. DNA
小題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.
小題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.

小題5: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:A
小題2:C
小題3:D
小題4:B
小題5:A

試題分析：這篇短文簡要的介紹了額DNA的發(fā)現歷史，并介紹了這一發(fā)現對于人類生活的影響及人們對此一發(fā)現的不同看法。
小題1:根據第二段In 1860, Gregor Mendel discovered a special reason why we look the same as other people in our family.描述，可知選A
小題2:根據第二段and found out that those small parts are real messages written in the DNA 描述，可知選C。
小題3:根據第三段In 1961, Marshall Nirenberg and Johann Matthaci found a message in DNA showing how DNA tells the cell（細胞）to build its parts.描述，可知選D。
小題4:根據第三段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，可知選B。
小題5:根據短文最后一段描述，可知可能引起好的或者壞的結果。故選A。
點評：本文淺顯易懂，各個小題都能在文中找到適當依據。只要認真閱讀短文，注意前后聯系，就能順利完成閱讀。文章所設試題主要考察細節(jié)查找，做題關鍵是找出原文的根據，認真核查小題和原文的異同。

練習冊系列答案

68所名校圖書小學畢業(yè)升學考前突破系列答案

年級	高中課程	年級	初中課程
高一	高一免費課程推薦！	初一	初一免費課程推薦！
高二	高二免費課程推薦！	初二	初二免費課程推薦！
高三	高三免費課程推薦！	初三	初三免費課程推薦！
更多初中、高中輔導課程推薦,點擊進入>>

相關習題

科目：初中英語 來源：不詳 題型：完形填空

Life in the 22^nd century will be different from that in the 21^st century because many changes will happen in the new century. 1_____ what will the changes be?
First, the population is growing very fast. There 2      more and more people in the world and most of them will live longer than before. Computers will be 3     smaller and more useful, and there will be 4     one in every home. And 5      studies will be one of the most important subjects in schools.
Second, people will work 6      hours than they are doing in the 21^st century. They’ll have more free time for sports, watching TV and7    . Traveling will also be cheaper and easier. And more people will go to8      countries for holidays.
Third, there will be changes in our food, too. People will use more land to 9      new towns and houses. Then there will be less room for cows and sheep, so 10       will be more expensive. Maybe no one eat it everyday; 11     , they will eat more vegetables and fruit. Maybe people will be 12     .
Last, work in the future will be13      , too. Robots will do the 14     and hard work. Because of this, many people won’t have 15     work to do. This will be a problem.

小題1:

A．But

B．And

C．However

D．Or

小題2:

A．will be

B．will have

C．are

D．have

小題3:

A．very

B．quite

C．much

D．too

小題4:

A．at most

B．at least

C．no more than

D．less than

小題5:

A．history

B．English

C．maths

D．computer

小題6:

A．less

B．more

C．fewer

D．little

小題7:

A．working

B．traveling

C．teaching

D．staying

小題8:

A．another

B．the other

C．other

D．others

小題9:

A．grow

B．plant

C．remain

D．build

小題10:

A．food

B．meat

C．vegetables

D．fruit

小題11:

A．however

B．moreover

C．instead

D．although

小題12:

A．healthy

B．healthier

C．health

D．healthiest

小題13:

A．dangerous

B．difficult

C．different

D．the same

小題14:

A．dangerous

B．happy

C．easy

D．boring

小題15:

A．more

B．much

C．many

D．enough

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解

Many scientists find that colors can change people’s feelings. It’s very interesting. Some colors can make people feel relaxed, and some colors can make people feel nervous. Now，this kind of knowledge is being used in many places. For example，school walls are always painted green because green makes students feel relaxed. It is also good for the students’ eyes. Some bookings they’ve learned from scientific studies. The color red makes people hungry. Many fast food restaurants have red furniture or walls. Soft colors like pink and light blue make people feel relaxed，so they spend more time eating. Loud music may be nices are also green or light blue for the same reason. Restaurant owners not only have to know how to make food，but also have to know how to make money. Here are some thi at first，but it soon makes people want to leave. Hard seats also make customers want to eat quickly and leave. Many restaurants，especially fast food restaurants, use this knowledge to make customers eat faster.
小題1:How does the color green make the students feel?

A．Hungry.

B．Nervous.

C．Angry.

D．Relaxed.

小題2:How does the color red make most people feel?

A．Hungry.

B．Comfortable.

C．Excited.

D．worried.

小題3:Which color isn’t mentioned in this passage?

A．Green.

B．White.

C．Light blue.

D．Red.

小題4:What do many fast food restaurants do?
①Play loud music. ②Play soft music.
③Have hard seats. ④Paint their walls red.

A．①②③

B．①③④

C．①②④

D．②③④

小題5:What’s the best title for this passage?

A．Color and restaurant.	B．Use color to make money.
C．Color and science.	D．Use color to change feelings.

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解

We all enjoy the beautiful show of colours as leaves change each autumn. But did you ever wonder how and why this happens?
Leaves are nature’s food factories. Plants take water from the ground through their roots and take carbon dioxide (二氧化碳) from the air. Plants use sunlight to turn water and carbon dioxide into glucose (葡萄糖). Glucose is a kind of sugar, which plants use as food for energy and growing.
The way plants turn water and carbon dioxide into sugar is called photosynthesis that means “ putting together with light”. A chemical called chlorophyll helps photosynthesis. It gives plants their green colour. As summer ends and autumn comes, the days get shorter and shorter, and trees “know” to begin getting ready for winter.
During winter, there is not enough light or water for photosynthesis. Trees rest during this time and live on the food they store during the summer. They begin to shut down their food-making factories.
As the green chlorophyll disappears from the leaves, we begin to see yellow and orange leaves. Small amounts of these colours have been in the leaves all along. We just can’t see them in the summer, because they are covered up by the green chlorophyll.
The bright reds and purples we see in leaves are made mostly in autumn. In some trees, like maples (楓樹), glucose is caught in the leaves after photosynthesis stops. Sunlight and the cool nights of autumn turn this glucose into a red colour. The brown colour of trees like oaks (橡樹) is made from waste left in the leaves.
It is the mixture of all these things that makes the beautiful colours we enjoy during autumn.
小題1:The word “chlorophyll” in the third paragraph means _______ in Chinese.

A．葉綠素

B．氧氣

C．胡蘿卜素

D．蛋白質

小題2:The leaves of the trees in autumn turn yellow because of the short of _____.

A．water and carbon dioxide

B．glucose and energy

C．sunlight and water

D．sunlight and carbon dioxide

小題3:The way that _______________________ is called Photosynthesis .

A．plants change water and carbon dioxide into sugar

B．plants turn water and carbon dioxide into sugar with the help of sunlight

C．plants use glucose as food for energy and growing

D．chlorophyll is a great help

小題4:Which of the following is NOT true?

A．When autumn and winter come, the days get shorter and shorter.

B．During winter trees rest and live on the food they store during the summer.

C．During winter small amounts of yellow and orange colours are kept in the leaves all the time.

D．Trees begin to stop making food in summer.

小題5:This passage tells us __________________.

A．all the plants can grow well with the strong sunlight

B．there are all kinds of plants on the earth

C．all the colours of the leaves aren’t made from chlorophyll

D．maples and oaks have the same reason as other trees for the change of colours

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解

With more and more farmers working in big cities, their children go into the cities, too.However, problems appear. One of these problems is that is difficult for these children to receive education in cities.
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’（外來務工人員的）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（捐贈）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（和諧的）.
小題1:From the passage, we know that Li Xin’s parents used to be __________.

A．workers	B．teachers
C．officers	D．farmers

小題2:The school provides Li Xin with the following things free except_____.

A．textbooks	B．uniforms
C．computers	D．meals

小題3:What does the underlined word “run” mean in Chinese in the passage?

A．奔跑

B．經營

C．考慮

D．收購

小題4:The passage mainly talks about__________.

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

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解

Dear Mr Zhu,
I am writing to your magazine’s “Teenagers Now” column(專欄) to ask for some help with my 16-year-old son. At the moment, he refuses to do almost everything his mother and I ask him to do. He is our only child and we treat him very well. His grandparents buy him many things, and yet he is still rude to us. He refuses to spend time with us or do as we tell him. Sometimes he acts as if he doesn’t even love us at all.
Now he refuses to do his homework, and instead insists on wasting his time watching DVDs and listening to foreign music. I cannot understand this music, but I don’t like it. He also spends too much time in Internet cafes, where he either plays games or chats online. He is wasting valuable time during this important period in his life!
What am I to do? At present, to prevent making his mother unhappy with an argument, I am allowing him his freedom. However, I am worried that if I keep allowing him to do what he wants, he may fail at school, or worse.
How can I help my son without harming our relationship?
Yours,
Liu Zhenhua
小題1:What’s Mr. Zhu’s job?

A．A teacher.	B．A magazine columnist.
C．A youth worker.	D．A doctor.

小題2:From the passage, we can know that Mr. Liu’s son is _______ to his parents.

A．friendly

B．thankful

C．polite

D．rude

小題3:What does Liu Zhenhua write to Mr. Zhu for?

A．To blame his son.

B．To ask for help with his son.

C．To say something about his son.

D．To complain to him about his son.

小題4:Mr. Liu’s son always spends his time _______.

A．doing his homework

B．playing games online

C．chatting with his parents

D．doing everything his parents ask him to do

小題5:What do you think is the possible answer for the father?

A．The father should let the son alone.

B．The father should give his son a beating.

C．The father should allow his son his freedom.

D．The father should be patient enough to have communication with the son.

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解

任務型閱讀(注意：每空1個單詞)。
Future and Today
　　It is well known that everyone has his own dream as well as his own future. But do you know what future really is ? I have to say that future is now. That is to say we must treasure every minute now. If we want to have a bright future, we should know how important time is and use it well.
　　There is an old English saying: "Gain time, gain life." Then what's time? Time is something that we can't see or touch, but we can feel it passing by. Time is always with us. When we are at table, time passes; when we play, time goes by unnoticeable. We always say "Time is money", but time is even more precious(珍貴的)than money, because when money is spent , we can earn it back. But if time is gone away, it will never return. So, some of us even say time is priceless(無價的).
　　We should always remember: future is now. For us students, we should try our best to work hard in order to create a great future of our own. We should make the best use of every hour and be the master of today. We should do everything before us as well as possible. And never put off what can be done today till tomorrow.
　　As we all know , "Time and tide wait for no man." If you waste today, you will regret tomorrow. So from now on, work hard. Tomorrow will be better, and your future will be brighter .Remember: "No pains, no gains." Today's hard work is the cause of tomorrow's harvest.
　　Title: Future and Today

小題1:	Supporting details
Future is now.	Everyone has his own dream as well as his own future. If we want to have a bright future, we should know the 小題2: of time and make every minute小題3: .
小題4: is priceless.	Time is money, but time is even more小題5: than money, because when money is spent , we can earn it back. But 小題6: time will return no more.
Be小題7: of today	Today’s hard work 小題8: to tomorrow’s harvest. As students, we should never小題9: what can be done today till tomorrow and we should try our 小題10: to do everything well.

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解

It was the last day of final exams in a university. On the steps of one building, a group of engineering students were discussing the exam. On their faces was confidence . This was their last exam and then they would graduate. With all these four years of college behind them, they felt ready to go into the world.
The professor had said they could bring any book or note they wanted, but they could not talk to each other. They went into the classroom happily. The professor gave them the papers. They smiled when they found that there were only five questions.
Three hours passed and the professor began to collect the papers. The students no longer looked so confident . The professor faced the class. No one spoke. They just held papers in their hands.
The professor then asked, "How many of you finished all five questions?"
Not a hand was raised.
"How many answered four?"
Still no hand.
"Three? Two?"
The students looked worried in their seats.
"One, then?" Certainly somebody finished one.
However, nobody replied. The professor put down the papers. "That is just what I thought," he said. "I just want to tell you that, even though you have finished four years of engineering, there are still many things about the subject you don't know. These questions you could not answer are quite common in everyday practice." Then he added with a smile, “You will all pass this course, but remember——even though you are now college graduates, your education has just begun."
小題1:When did the story happen?

A．At the beginning of a new term.

B．After graduating from the university.

C．On the first day of the final exams.

D．On the last day of the final exams.

小題2:Why were the student very confident at the beginning?

A．Because they knew the coming exam would be easy

B．Because they knew the coming exam would be difficult

C．Because they knew the coming exam would be strange

D．Because they knew the coming exam would be interesting

小題3:How did the students feel when the professor began to collect the papers?

A．Happy.

B．Confident.

C．Worried

D．Proud

小題4:Which is the best title for the passage?

A．Confident Students	B．A Common professor
C．An Easy Exam	D．So Much to Learn

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解

閱讀短文，從所給的選項中選擇四個句子完成短文，使其文理通順。（有一項多余）
Imagine a normal day: you go to work, return home, and maybe buy somethings on your way home.小題1:. For a large number of people, the answer to that question is zero.
Ever since the Industrial Revolution（工業(yè)革命）began, many changes have taken place in our world.小題2:.
Want to buy a pair of shoes? An MP3 player? A book? It’s only a few clicks(點擊) away. Need a computer? A gift? A tennis racket? Click. No need to even leave your house.小題3:And the quality of crops that are grown and harvested(收割) by computers is getting better.
You are probably booking (預定) your hotel room online. When can we choose our own rooms and get our keys by ourselves? We also hope that everything we want to buy at the supermarket will be ready for us when we arrive.小題4:Researchers have already designed a robot to correctly find your preferred beer and bring it to you.
Will human jobs be completely done by robots? We don’t know. But computers are doing more and more jobs for humans.
小題5:How many examples of ways of doing things does the author pick up to show the advantages of computers?
A. Five. B. Four. C. Six. D. Three.

A. On the farm, machines are used, and more and more farm jobs can be done by machines.
B. In a factory, workers are busy making products.
C. Many jobs done by humans in the past are now being done by technology(技術) instead.
D. How many people do you have to talk with to do those everyday tasks?
E. In fact, a restaurant in China recently started using some robots to serve people.

查看答案和解析>>

同步練習冊答案

練習冊

高中

初中

小學