Today there are 6 billion people on the earth. By the year 2050 there may be 12.5 billion. There will be 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(zhì)). Foods from plants grown in this way are called genetically modified foods(轉(zhuǎn)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 in 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 only one way of feeding people in 2050. There are strong feelings against them, because they are unnatural. They may feed people, 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.
小題1:GM foods ________.
A．a(chǎn)re a quick way to produce food
B．grow in the wild
C．a(chǎn)re safe
D．a(chǎn)re grown only in rich countries
小題2:Why do some people not like GM foods?
A．They are not useful.
B．They are not helpful.
C．They are not natural.
D．They are not cheap.
小題3: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

小題1:A
小題2:C
小題3:B

小題1:細(xì)節(jié)理解題，根據(jù)文中語(yǔ)句“Since 1983, scientists have been able to change plants more quickly by changing their genetic material(遺傳物質(zhì))”理解可知。
小題2:細(xì)節(jié)理解題，根據(jù)文中語(yǔ)句“    GM plants are not natural. No one knows how good or bad they are.”理解可知。
小題3:細(xì)節(jié)理解題，根據(jù)文中語(yǔ)句“But, both rich and poor countries are very interested in their use, and they are not going to go away.”理解可知。
練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：初中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解

Many people think that water will never be used up（用盡）because there are many rivers and lakes. And the rain can make us get enough fresh water. Also, we can dig wells（井）to find fresh water under the ground. In fact, it is wrong and dangerous to think so. In some areas, people fight（爭(zhēng)斗）for fresh water. There is little rain there all year round. Let’s look around us. Some factories pour（倒）dirty water into rivers. And some people drop litter into rivers. We see polluted water here and there. We must do something to help people understand about preventing water from being polluted. It’s never too late if we take action right now.
小題1:Fresh water is from         .
A．rivers and lakesB．rainC．wellsD．A, B, and C
小題2:It’s dangerous and wrong to        .
A．get enough fresh water
B．think water is endless
C．dig a well
D．use up water
小題3:What do people fight for in some areas?
A．Fresh water.B．Little rain.
C．Pouring dirty water.D．Money.
小題4:What’s the main idea?
A．Water will never be used up.
B．How to find fresh water.
C．Water is everywhere.
D．Shortage（短缺）of fresh water.

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解


（Four students are talking about the future after class.）
Deng Yu ：In 2050, China will be richer than it is now, Beijing will be getting ready for the 40th Olympic Games in 2052. We will see the blue and clear sky and smell the fresh air. There will be more pandas living happily China. I believe that 2050 will be the year of China.
Liu Yuan ：A holiday to the moon will no longer be a dream. We can also travel far to other planets and talk with the spacemen. We might also eat something like pills（藥丸）instead of today’s meals. Everyone will enjoy a longer life.
Sun Wei ：Robots will be very popular. They will do what people don’t want to do. We’ll build new homes on other planets. By then, I’ll be sixty years old. Maybe we will have an exciting talk in my new home on another planet!
Zhang Lan：By the year of 2050, cloning（克隆）will be used in many ways. It will bring back animals which disappeared many years ago. There will be no pollution, the whole world will be one big family. There will be no wars. As time passes, we’ll live a much easier and better life.
小題1:      thinks that people can spend their holidays on the moon in the future.
A．Deng Yu              B．Zhang Lan            C．Liu Yuan
小題2:．What does Zhang Lan think will happen in the future.
A．There’ll be more animals which disappeared many years ago.
B．Robots will do the things that people don’t want to do.
C．People can talk with the spacemen.
小題3:The 40th Olympic Games will be hosted in       .
A．Paris                B．Beijing              C．London
小題4:How old will Sun Wei be        by 2050?
A．50                   B．60                   C．70
小題5:．From the talk, we can know that       .
A．the 40th Olympic Games will take place in 2052.
B．we will have the same food in 2050 as we do now.
C．a(chǎn)ll the people will move to another planet in the future.

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解



Happiness is important for everyone. Most people want to be happy but few know how to find happiness. Money and success don't bring lasting happiness. Happiness depends on ourselves. In other words, we make our own happiness.
Some people believe that if they are wealthy, with the money they will be able to do anything they want, which means happiness. On the other hand, some people believe that holding a high position in the government is happiness. In this way, you have not only money, but also many other things which can't be bought by money. However, other people believe that having lots of money is not happiness, nor is holding a high position in the government. These people value(重視) their beliefs, or their intelligence, or their health. They think these can make them happy.
Here are a few ways to help you be happier.
The first secret of happiness is to enjoy the simple things in life. Too often, we spend so much time thinking about the future, for example, getting into college or getting a good job, that we don't enjoy the present. You should enjoy life's simple pleasures, such as reading a good book, listening to your favorite music, or spending time with close friends. People who have close friends usually enjoy happier and healthier lives.
The second secret of happiness is to be active. Many people go dancing or play sports. People can forget about their problems and only think about the activities.
Finally, many people find happiness in helping others. According to studies, people feel good when they volunteer their time to do many meaningful things for other people. If you want to feel happier, do something nice for someone. You can help a friend with his or her studies, go shopping to get food for an old neighbor, or simply help around the house.
Now maybe you know how to find happiness!
小題1:The underlined word “wealthy” means “__________” in the article.
A．pleasedB．healthyC．excitedD．rich
小題2:Some people who hold a high position in the government think they can _________.
A．get money and something they can't buy with money
B．do what they want to do at any time
C．enjoy health which makes them work hard
D．take an active part in all kinds of activities every day
小題3:The writer thinks the secret of happiness is that people ___________.
A．think about getting money
B．think of presents they don't like
C．often spend time with close friends
D．often spend time on entering the college
小題4:Many people find it happy to ___________.
A．remember the old days and troubles
B．do some meaningful things for others
C．go shopping to buy some food
D．make much money and little success
小題5:The passage mainly tells us __________.
A．how to find happiness
B．how to save happiness
C．to do something good for others
D．to value our beliefs or health

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：不詳 題型：完形填空

Electric bicycles which run on battery-operated (電瓶) motors are winning over riders of ordinary bikes   41 their speed, quality and environmental advantage.
They were first   42 on 1980s in China, but the selling was not very good. Today, thanks 43  improvements on battery quality, the electric bikes sell well. There are now more than 100 electric bicycle producers in China and 26 million such bicycles were produced in 2011. Japan is another large  44  of such bicycles in the world with a total production reaching 381,721in 2010.
  45 China is one of the largest producers of electric bicycles in the world, the   46  of its producers with mass production (大批量生產(chǎn)) is actually small.
Electric bicycles are still   47 in China. Time is needed for people to become familiar with them and accept them. Each bike’s price of between 2,000 yuan (US $318) and 3,000 yuan (US $477) is still  48  for ordinary citizens (民眾). Although such bikes are quick, safe and 49 to operate, their batteries still have shortcomings (不足). They weigh more than 10 kilograms; their service life is   50  two years and they   51  400 yuan each.
There were more than 450 million bikes in China in 2006. If just one percent of all these bikes are replaced by electric  52  , the market will be very large. And   53  the battery is further improved and the price is    54   , many of us will not be able to keep back from    55  the latest electric bikes
小題1:
A．because ofB．becauseC．towardsD．a(chǎn)t
小題2:
A．buildB．builtC．buildingD．to build
小題3:
A．forB．inC．byD．to
小題4:
A．producerB．productionC．produceD．to produce
小題5:
A．ButB．IfC．AlthoughD．When
小題6:
A．buyerB．numberC．priceD．owner
小題7:
A．oldB．tallC．newD．short
小題8:
A．smallB．largeC．expensiveD．high
小題9:
A．easyB．difficultC．hardD．easily
小題10:
A．other thanB．more thanC．overD．less than
小題11:
A．spendB．costC．takeD．make
小題12:
A．carsB．bikeC．onesD．one
小題13:
A．whereB．unlessC．whetherD．if
小題14:
A．increasedB．raisedC．reducedD．lifted
小題15:
A．buyingB．broughtC．to buyD．buy

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解

Do you get angry at your friends’ singing loudly while you are working? Or when your best friend does not wait for you after school?
If you do, you need to control your feelings and stop getting angry so easily. Getting angry with people can make you lose friends.
Gary Egeberg, an American high school teacher, has written My feelings Are Just Like Wild Animals to help you control your feelings. It tells teens how to stay cool when bad things happen to them. The book says that getting angry only makes problems worse. It can never make them better. Getting angry is not a natural way to act. It is just a bad habit, like smoking. The book says you can control your anger easily—all you have to do is telling yourself not to be angry.
When a baby falls over, it only cries if people are watching it. Like a baby, you should only get angry if you are sure it is the right thing to do.
·Keep a record. Every time you get angry, write down why you are angry. Look at it later and you will see you get angry too easily.
·Ask your friends to stop talking to you when you get angry. This will teach you not to be angry.
·Do something different. When you get angry, walk away from the problem and go somewhere else. Try to laugh!
小題1:The writer wants to tell us         .
A．not to get angryB．to work hard at school
C．to do more exerciseD．to help each other
小題2:The writer thinks that if you get angry easily you will         .
A．get ill very easilyB．lose your friends
C．get sad easilyD．eat less
小題3:My Feelings Are Just Like Wild Animals is a         .
A．storyB．bookC．pictureD．film
小題4:My Feelings Are Just Like Wild Animals mainly tells us         .
A．what to read B．how to read
C．how to stay cool D．how to learn English
小題5:When a baby falls over, it only cries if people are watching. Here “it” refers to         .
A．the bookB．a(chǎn)ngerC．habitD．the baby

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：不詳 題型：完形填空

What is the best way to study? This is a very important question. Some Chinese students often   31  very hard for long hours. It is a   32   habit, but it is not a better way to study. An efficient(講效率的) student must   33   enough sleep, enough food and enough rest. Every week you   34   to go out for a walk or visit some friends or some nice places. It's good       35   your study. When you return to your studies, you'll find yourself   36   than before and you'll learn more.
Maybe we can   37   that learning English is   38   taking Chinese medicine. We don't mean that it's bitter (苦的). We mean that like Chinese medicine, the efficiency of your study   39   slowly but surely.   40   slowly but surely every day and effects will come just like Chinese medicine.
小題1:
A．playB．studyC．sleepD．think
小題2:
A．bestB．betterC．goodD．bad
小題3:
A．haveB．doC．wantD．make
小題4:
A．wantB．hopeC．needD．wish
小題5:
A．inB．forC．toD．a(chǎn)t
小題6:
A．weakerB．strongerC．fatterD．thinner
小題7:
A．sayB．guessC．talkD．know
小題8:
A．a(chǎn)boutB．onC．a(chǎn)tD．like
小題9:
A．returnsB．comesC．givesD．gets
小題10:
A．SleepB．KnowC．LearnD．Play

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解

Every object has weight. But the center of its weight is not always in the middle of the object. If the top of an object is heavier than its bottom, it will fall over easily. We say that its center of gravity is high. But if the bottom is heavier, it won’t fall easily. Then we say that its center of gravity is low.
Look at the first picture. This empty box must fall over, because its center of gravity (C) is not above the line of its bottom (AB).
Now look at the second picture. There is some heavy iron in the bottom of this box. It will not fall, because its center of gravity is above its bottom.

小題1:If the bottom of an object is ______ its top, it will fall over easily.
A．lighter thanB．heavier thanC．no heavier than　　D．a(chǎn)s heavy as
小題2:Please point out which box will not fall.

小題3:The main idea of the passage is _________.
A．why things fall over　　　　B．a(chǎn) low center of gravity
C．a(chǎn) high center of gravity　　D．that everything has weight

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解

閱讀下列短文，根據(jù)短文內(nèi)容，完成文章后面的任務(wù)。

Building blocks(積木) are still one of the most popular traditional toys today．Their interesting design and easy use attract children of all ages．Most traditional toys, like building blocks, were first made of wood．Today, wooden building blocks are still used, but now there are several other types of building blocks to choose from, like plastic building blocks．
①Children build all kinds of things that they see in everyday life _________ building blocks． This gives them the ________ to learn new things and life skills．
②Building blocks can help children to practice their language skills． Most children talk to each other as they build things with these traditional toys． This type of toy also helps develop the skills that children need in life． As they begin to join groups playing with building blocks, they learn to take turns, to share, and to solve problems with others． However, these are not the only advantages of playing with building blocks． The building blocks also help develop children’s skills in math and science． They allow children to work according to the steps of scientific discovery, which are first to watch and think, and then to test． Traditional toy building blocks also come in different shapes, colors and sizes． These types of building blocks encourage children to develop skills in dividing things． Playing with building blocks is not just fun but also very helpful． So people around the world like them．
小題1:回答下列問(wèn)題：What were traditional toy building blocks made of?
_______________________________________________________________________________
小題2:在①的空白處填入適當(dāng)?shù)膯卧~使句意完整、上下文通順：__________            
小題3:將②處翻譯成漢語(yǔ)________________________________________________________________
小題4:找出文中與下列句子意思相近的句子：    
It is both fun and helpful to play with building blocks.
_______________________________________________________________________________
小題5:在文中找出最能表達(dá)該短文主題的句子：
______________________________________________________________________________

查看答案和解析>>

同步練習(xí)冊(cè)答案