精品一区二区免费在线观看_国产精品久久久久久av福利软件_97成人精品区在线播放_国内成人精品一区

精英家教網 > 初中英語 > 題目詳情

Today there are 6 billion people on the earth. By the year 2050, there may be 12.5 billion. There are a lot of people to feed.We need more food.

      One way to produce more food is by growing stronger plants. For thousands of years, farmers have made plants better. Every season, they pick the best plants for the next season. It works very slowly. Since 1983, scientists have been able to change plants more quickly by changing their genetic material(遺傳物質). Foods from plants grown in this way are called genetically modified foods(轉基因食品), or GM foods.

      By changing the genetic material of a plant, it is possible to make new plants. They make  plants which are strong against plant diseases. They can also help with our diseases: a kind of rice is being prepared, for example, which stops people from becoming blind.

    Rich countries produce GM foods because they are easy to grow and bring in more money. Poor countries are interested in them because they help produce more food.

    GM plants are not natural. No one knows how good or bad they are. Making GM foods is the only way of feeding people in 2050. There’re strong feelings against them, because they are unnatural. They may feed people, and then hurt them or their children later. But, both rich and poor countries are very interested in their use, and they are not going to go away. In 2050, we may think differently about them.

(  )1. GM foods are made by _______.

A.farmers          B.workers                  C.scientists                D.plants

(  )2. What are the good things about GM foods?

         A.They make plants strong against diseases.

B.They are unnatural.

C.They can help with human diseases.

D.Both A and C.

(  )3. GM foods _______.

         A.are a quick way to produce food                B.grow in the wild

C.are unsafe                                              D.are grown only in rich countries

(  )4. Why do some people dislike GM foods?

         A.They are not useful.                                  B.They are not helpful.

          C.They are not natural.                               D.They are not cheap.

(  )5. From the reading we know that _______.

         A.GM foods will disappear one day in the future

B.GM foods will not disappear in the future

         C.people will not be interested in GM foods

         D.People will have to stop using GM foods

練習冊系列答案
相關習題

科目:初中英語 來源: 題型:

--- I can’t go with you today. There will be a test tomorrow.
----      .
A.It doesn’t matter.B.My pleasure.
C.I don’t think you.D.Sorry to hear that.

查看答案和解析>>

科目:初中英語 來源:2012學年浙江省溫州市平陽縣七年級下學期期中考試英語試卷(帶解析) 題型:單詞拼寫

單詞拼寫: 每個空格限填一詞 (每空1分;共10分)
Mr Black comes from the USA.He lives in New York.He is a 【小題1】(醫生).He works at night.And he 【小題2】_(睡覺) in the day.He is a little___【小題3】_(害羞的).He likes to take a __【小題4】_(散步) in a _【小題5】_(安靜的) place.He likes 【小題6】(獅子).He often goes to the zoo.His wife, Mrs Black is a nurse.It’s _【小題7】_(炎熱的) today.There is a pool【小題8】(在……之后)the house.Look! She is swimming in the pool.Oh, she is 【小題9】(饑餓的) now.Mr Black is 【小題10】(煮)dinner.They’re very happy.

查看答案和解析>>

科目:初中英語 來源:2015屆浙江建德李家鎮初級中學初一5月單元檢測英語卷(解析版) 題型:閱讀理解

There is a park near our school. We can see many trees and flowers there. We can see a hill behind the park, too. At the foot of the hill we can see a river. There are some boats on it. It is Sunday today. There are many Young Pioneers(少先隊員) in the park. Some are walking and singing. Some are dancing or playing games. Ann and her sister Kate are flying a kite. Tom and his brother Sam are throwing a frisbee (扔飛盤). Their parents are sitting under a tree. All the family are having a good time.

1.Where is the hill?

A.Across from the river.                    B.Behind the school.

C.In front of the park                      D.Behind the park.

2.Who’s Sam? He is ______.

A.Kate’s brother    B.Ann’s brother     C.Tom’s brother     D.Jim’s brother

3.Do their parents come to the park, too ?

A.Yes, they do.       B.No, they don’t.    C.Yes, they are.       D.No, they aren’t.

4.What are Ann and Kate doing?

A.Singing           B.Flying a kite        C.Working          D.Throwing a frisbee

5.Where are their father and mother sitting?

A.Near our school.                        B.Behind the park.

C.At the foot of the hill.                    D.Under a tree.

 

查看答案和解析>>

科目:初中英語 來源:2012-2013學年江蘇省南京市玄武區中考一模英語試卷(解析版) 題型:閱讀理解

The San Diego Zoo has been a lovely home for giant pandas since two of the black-and-white bears came to visit in 1987. This week there was snow in San Diego—well, at least for a lucky group of giant pandas.

Over 15 tons of snow was blown into the San Diego Zoo's panda area on Tuesday morning to give the endangered bears a chance to play. They would experience the snow just like living in their natural habitat.

The snow day was a first for Xiao Liwu whose name means "Little Gift." He was the sixth baby panda born to Bai Yun. Xiao Liwu was jumping on Mom, playing with her and getting used to being thrown in the snow by mama bear. Jennifer Becerra, San Diego Zoo keeper said, "He was really enjoying the snow and running around. I've never seen him so happy."

All the San Diego Zoo’s giant pandas are from China, as part of a long-term captive breeding(人工養殖) program. Four of Xiao Liwu's brothers have already been moved from California to China.

Today there are 44 giant pandas living in zoos outside of China, where the bears' only natural home is. As just 1,600 pandas are thought to be left in the wild, researchers insist that captive breeding is an important way to study and protect the endangered pandas. Not only because of the habitat loss from human activities and low reproductive rates(繁殖率), giant pandas' survival is also affected by climate change. A study showed that global warming could kill much of the bears' main food, bamboo, over the next century.

1.Why was the snow blown into the San Diego Zoo's panda area?

A.To stop the bamboos from dying.

B.To give the pandas a chance to play.

C.To help the pandas live in their natural habitat.

D.To make Xiao Liwu happy.

2.What’s the relationship between Bai Yun and Xiao Liwu?

A.Wife and husband.

B.Father and daughter.

C.Sister and brother.

D.Mother and son.

3.What is NOT the factor that influences the giant pandas' number?

A.The loss of habitat.

B.Low reproductive rates.

C.Human research.

D.Climate change.

4.Which of the following is the best title of this passage?

A.Giant pandas in San Diego Zoo

B.Giant pandas in danger

C.Xiao Liwu’s happy time

D.How to protect giant pandas

5.Which of the following is true according to the passage?

A.Captive breeding is the most useful way to protect giant pandas.

B.More than 44 giant pandas live in zoos outside of China now.

C.China is the only natural home of giant pandas.

D.Xiao Liwu was afraid of being thrown in the snow by mama.

 

查看答案和解析>>

科目:初中英語 來源:2011屆黑龍江省初三下學期第一次月考英語卷 題型:閱讀理解

A rabbit is running into his hole. You may ask, “What happened?”

Well, when a rabbit sees something dangerous, it runs away. Its tail moves up and down as it runs. When other rabbits see this tail moving up and down, they ran, too. They know there is danger. The rabbit has told them something without making a sound. It has given them a signal.

Many other animals use this kind of language. When a bee finds some food, it goes back to his home. It can’t tell the other bees where the food is by speaking to them, but it does dance in the air. This tells the bees where the food is.

But animals say things by making sounds. A dog barks, for examples, when a stranger comes near. A cat purrs(發出呼嚕呼嚕的聲音) when pleased. Some birds make several different sounds, each with its own meaning.

But human beings have something that no animals have---- a large number of words about things, actions, feelings or ideas. We are able to give each other information to tell or inform other people what is in our mind or how we feel. By writing words down we can remind ourselves of the things that have happened, or send messages to people far away. No animals can do this. No animals has the wonderful power of language.

No one knows how man learned to make words. Somehow he learned to make them. As centuries went by, he made more and more new words. This is what we mean by language.

People in different countries made different kinds of words. Today there are about fifteen hundred different languages in the world. A very large English dictionary, for examples, contains four or five hundred thousand words. But we don’t know all these. The words we know are called vocabulary. We should try to make our vocabulary larger. Read as many books as possible. When we met a new word, look it up in the dictionary. A dictionary is the most useful book.

1.What’s the meaning of the underlined word?

A.標語

B.信號

C.唱片

D.圖像

2.A dog can tell something__________.

A.by giving signals

B.by making different sounds

C.by purring

D.by barking

3.It has been proved that no animals are able to_________.

A.give the others information

B.express their actions and feelings with words

C.tell others how they feel

D.make different sounds, each with its own meaning.

4.Generally speaking, what we mean by “vocabulary” is_______.

A.all the words that we know

B.more and more words we use

C.all the words we need

D.the dictionary which contains thousands of words

5.What must we do in order to make our vocabulary larger?

A.Make more and more new words

B.look up some new words in a dictionary

C.learn more language

D.Try to read as many books as possible

 

查看答案和解析>>

同步練習冊答案
精品一区二区免费在线观看_国产精品久久久久久av福利软件_97成人精品区在线播放_国内成人精品一区
国产精品乱人伦一区二区| 亚洲一区二区成人在线观看| 国产精品一级片| 国产亚洲精品资源在线26u| 国产成人免费xxxxxxxx| 国产精品天干天干在观线| 97久久超碰精品国产| 一区二区三区四区五区视频在线观看| 欧美亚洲国产一区二区三区va| 午夜精品久久久久影视| 日韩午夜中文字幕| 国产精品正在播放| 亚洲欧洲www| 在线观看av一区二区| 日韩电影在线免费看| 欧美va在线播放| 粉嫩久久99精品久久久久久夜| 亚洲三级免费观看| 91精品久久久久久久91蜜桃| 国产一区在线精品| 综合欧美一区二区三区| 欧美日韩的一区二区| 久久99精品一区二区三区三区| 国产女人18毛片水真多成人如厕 | 3atv一区二区三区| 久久99精品久久久久久动态图 | 国产三级欧美三级日产三级99| 成人黄色国产精品网站大全在线免费观看 | 久久精品一区四区| 91小视频免费观看| 午夜av区久久| 日韩午夜av电影| 成人午夜激情在线| 天堂成人国产精品一区| 久久久国产精品不卡| 在线中文字幕一区二区| 久久草av在线| 亚洲欧美色综合| 日韩精品最新网址| 色综合天天视频在线观看| 日韩—二三区免费观看av| 日本一区二区不卡视频| 在线91免费看| 成人国产在线观看| 人人超碰91尤物精品国产| 国产精品进线69影院| 欧美一区二区精美| 93久久精品日日躁夜夜躁欧美| 热久久免费视频| 亚洲欧美日韩成人高清在线一区| 日韩欧美亚洲国产另类| 一本久久a久久免费精品不卡| 毛片基地黄久久久久久天堂| 亚洲欧美日韩国产成人精品影院| 精品日韩一区二区三区| 91久久国产综合久久| 国产一区 二区| 午夜精品久久久久久久99水蜜桃| 国产女人aaa级久久久级| 欧美一区二区视频免费观看| 99视频一区二区| 激情欧美一区二区三区在线观看| 一区二区三区久久久| 国产日韩欧美一区二区三区综合| 欧美女孩性生活视频| 91在线国产福利| 国产酒店精品激情| 日韩精品国产精品| 亚洲精品日日夜夜| 中文字幕欧美日韩一区| 精品剧情在线观看| 欧美精品 国产精品| 91丨九色丨国产丨porny| 国产精品资源在线看| 蜜臀国产一区二区三区在线播放| 夜夜亚洲天天久久| 国产精品夫妻自拍| 国产性色一区二区| 欧美成人精品1314www| 欧美欧美欧美欧美首页| 在线免费观看日本一区| 99免费精品在线观看| 国产久卡久卡久卡久卡视频精品| 日韩av一区二区在线影视| 夜夜嗨av一区二区三区中文字幕| 国产精品欧美久久久久无广告| 精品久久久久久久久久久院品网| 777色狠狠一区二区三区| 欧美午夜精品久久久久久超碰| 91美女精品福利| 成人h动漫精品| 岛国精品在线观看| 国产精品亚洲第一区在线暖暖韩国 | 91精选在线观看| 欧美日韩不卡一区| 欧美主播一区二区三区美女| 91色乱码一区二区三区| 成人国产精品免费观看动漫| 国产成人8x视频一区二区| 狠狠色伊人亚洲综合成人| 伦理电影国产精品| 免费高清不卡av| 日本怡春院一区二区| 三级久久三级久久久| 午夜精品一区二区三区电影天堂| 亚洲成人动漫在线观看| 亚洲国产色一区| 亚洲午夜一区二区| 一区二区免费视频| 亚洲一区二区中文在线| 亚洲一区二区三区三| 一区二区成人在线| 一区二区三区四区不卡视频| 一区二区在线观看av| 一级特黄大欧美久久久| 夜夜嗨av一区二区三区四季av | 免费在线看一区| 六月婷婷色综合| 国产自产v一区二区三区c| 国内久久婷婷综合| 国产福利精品导航| 成人激情午夜影院| 99久久免费国产| 91黄色激情网站| 欧美三级电影在线看| 欧美区一区二区三区| 日韩美一区二区三区| 亚洲精品一区在线观看| 国产午夜精品一区二区三区视频| 日本一区免费视频| 亚洲视频一区二区在线| 亚洲一区二区三区小说| 天天综合网 天天综合色| 裸体健美xxxx欧美裸体表演| 国内精品伊人久久久久av影院| 国产精品91一区二区| 99久久精品情趣| 精品视频在线看| 日韩视频不卡中文| 国产日产欧美精品一区二区三区| 国产精品国产三级国产专播品爱网| 亚洲视频狠狠干| 亚洲成国产人片在线观看| 蜜臀久久99精品久久久画质超高清 | 精品国产91久久久久久久妲己| 欧美极品美女视频| 最新欧美精品一区二区三区| 亚洲国产综合在线| 久久不见久久见免费视频1| 国产精品乡下勾搭老头1| 91在线精品一区二区三区| 欧美日韩黄视频| 亚洲精品一区二区三区香蕉| 国产精品私人影院| 亚洲电影一级片| 国内外成人在线| 欧美一区午夜视频在线观看 | 欧美伊人久久久久久午夜久久久久| 国产精品一二三区| 91首页免费视频| 欧美一区二区三区在线电影| 久久日韩粉嫩一区二区三区| 一区在线中文字幕| 日韩中文字幕区一区有砖一区| 经典三级在线一区| 一本久道中文字幕精品亚洲嫩 | 欧美精品vⅰdeose4hd| 精品国产麻豆免费人成网站| 日韩理论在线观看| 日韩精品一级中文字幕精品视频免费观看| 久久99久久久久久久久久久| av在线不卡免费看| 4438x亚洲最大成人网| 国产婷婷一区二区| 亚洲国产综合91精品麻豆| 国产一区二三区好的| 色94色欧美sute亚洲13| 日韩三级电影网址| 自拍偷拍亚洲激情| 久久精品国产成人一区二区三区| 成人av第一页| 欧美挠脚心视频网站| 国产日韩精品一区二区浪潮av| 亚洲高清在线精品| 国产酒店精品激情| 欧美午夜精品电影| 久久久精品免费观看| 亚洲成人精品影院| 成人性生交大片| 欧美一级一区二区| 中文字幕在线不卡| 激情五月激情综合网| 色婷婷av一区二区三区gif| 精品国产一区二区在线观看| 亚洲激情欧美激情| 岛国一区二区在线观看| 欧美一二三区在线| 一区二区三区电影在线播| 国产精品一区二区久激情瑜伽| 欧美另类高清zo欧美|