Biodiversity(生物多樣性), or biological diversity, is a wide-ranging concept that covers all the different kinds of plant and animal species present on earth. Environmentalists believe that many millions of species exist. As all these living organisms are dependent on each other in some way, biodiversity is desirable. Any loss to the planet is actually a loss for mankind as well, and it is our responsibility to try and save Earth’s biodiversity.
Biodiversity has a vital role to play in the evolution（演變）of species. Species become extinct, but new species evolve, and this is how a balance is maintained. This may sound pretty simple, but it takes millions of years for changes to take place.
Biodiversity is also very important to the stability of food webs. Damage to them can mean disaster for an entire ecosystem. The extinction of a single animal species can put huge pressure on the numerous other species dependent on it.
Biodiversity also has an important role to play in human society. Apart from being the most intelligent species on earth, human beings are also the most dependent. We depend on nature to meet our basic needs. When we change the balance of nature to create our cities and bring about our technical advances, we knowing or unknowing cause great damage to the ecosystem. This must be understood, and the damages must be reversed（顛倒）in any way they can to ensure that the balance of the ecosystem is maintained.
小題1:We learn from the first paragraph that_________.
A biodiversity can be seen
B all living species are found on earth.
C people everywhere are aware of the importance of biodiversity
D the loss of any species can affect humans
小題2:Why can change in food webs lead to disaster?
A Because it can make people suffer from disease
B Because it can put huge pressure on some species
C Because it takes a long time for such changes to take place
D Because it will damage ninety-nine percent of species
小題3:What does the underlined word probably mean?
A 畫線  B Peace  C Strength  D Variety
小題4:We learn from the last paragraph that __________.
A humans are as independent as they are intelligent
B the balance of the ecosystem is easily maintained
C nature has given us a lot
D nature is taking revenge on us
小題5:Which of the following may be the best title for this passage?
A Food Webs are Closely Related to Biodiversity.
B Biodiversity Plays a Very Important Role in Evolution
C How Biodiversity Affects Human Society.
D Understanding Biodiversity and Its Importance.

小題1:D
小題2:B
小題3:A
小題4:C
小題5:D
1.問題：從第一段中我們可以知道什么，答案：D任何物種的消失都會影響人類。從最后一句生物物種的的缺失也是人類的損失努力保護(hù)和拯救地球物種的多樣性是我們的責(zé)任。2.問題：為什么改變食物鏈會導(dǎo)致災(zāi)難？答案：B。它會給某一物種帶來巨大壓力。3.問題：畫線部分的單詞意思可能是：不變。4.問題：最后一段我們可以知道答案C。從第一句中心句生物多樣性對我們?nèi)祟惿鐣财鹬匾淖饔谩?.下列哪項(xiàng)是最好的標(biāo)題？理解生物多樣性及其它的重要性。
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

More than a hundred years ago, an American produced (創(chuàng)造) a game. He called it indoor tennis. The Americans were not interested in it at first so he sent it to his London friends and it became very popular (流行) in Britain. The game was then played across the dining-room table or on the floor with the net hung between two chairs. In the early days ，the balls were made of cork (軟木) or rubber. The bats(球拍) were made of wood.
A few years later a hollow (空心) ball like the one we use today was invented. The game then quickly spread all over the world. An Englishman once made a bat covered with rubber. He first played the game in England and called it "ping - pong". "Ping" was the sound of the bat when it hit the ball, and "pong" was the sound of the ball when it hit the table.
小題1:Who invented the game of ping-pong?
A．A Chinese.B．An Englishman.C．An American.D．We don't know.
小題2:The game was first called ________ by its producer(創(chuàng)造者).
A．ping- pong tennisB．table tennis C．our-door tennisD．indoor tennis
小題3:What did the British think of the game?
A．Moving (感人的).B．Interesting.C．Terrible.D．boring.
小題4:In the early days，the ball was________.
A．hollowB．covered with rubber
C．made of cork or rubberD．made of wood
小題5:The name of ping-pong has something to do with __________.
A．soundB．sizeC．historyD．place

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解


Shopping in Singapore is really a pleasure for tourists. The Great Singapore Sale is held every year, usually during the summer months. Singapore’s famous shopping stores welcome a great number of visitors from all over the world. Their shopping hours last till midnight. During this time, nice and cheap goods are on sale for tourists to choose from. Tourists can also try delicious foods there and experience the Singaporean nightlife.
Certain stores offer discounts of up to 70 percent or even higher if people use their credit（信用）cards. For tourists that hold a special Tourist Card, they can enjoy a lot of benefits(好處), such as discounts on watches, jewellery and cosmetics (化妝品). The card also gives discounts when you visit local attractions such as Singapore Zoo.
It is well worth checking out in the different shopping districts of Singapore during this 8-week Shopping Marathon. Orchard Road is surely the best place for shopping in the city. A large number of restaurants and clubs can be found in this area. Marina Bay includes both big department stores（百貨商店） as well as small shops, so everything you would want to buy can be found here.
Advice for tourists planning to enjoy this festival of shopping: travel light and take a comfortable pair of shoes with you, for you are sure to do a lot of walking and return with your bags much heavier.
小題1: You will see the Great Singapore Sale if you go to Singapore in ________.
A．JanuaryB．AugustC．MayD．November
小題2:We can learn from the passage that ________.
A．the Great Singapore Sale is held twice a year
B．the Shopping Marathon lasts for more than two months
C．Orchard Road is Singapore’s best shopping street
D．Marina Bay is a lonely street with small shops
小題3:Why are tourists advised to travel light if they want to enjoy the shopping festival?
A．They will buy many goods and have to do lots of walking.
B．It is not safe for them to take heavy bags with them.
C．There is heavy traffic in the shopping districts of Singapore.
D．Travelling with too many things is not allowed in Singapore.

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解


The best way of learning a language is using it. The best way of learning English is talking in English as much as possible. Sometimes you’ll get your words mixed up and people will not understand you. Sometimes people will say things to quickly and you can’t understand them. But  if you keep your sense of humor(幽默感), you can always have a good laugh at the mistakes you make. Don’t be unhappy if people seem t be laughing at your mistakes. It’s better for people to laugh at your mistakes than to be angry with you, because they don't understand what you are saying. The most important thing for learning English is, “Don’t be afraid of making mistakes because everyone makes mistakes.”
小題1:What is the best way for you to learn a language according to the writer?
A. writing.            B. using it.        C. listening.
小題2:What should you do in learning English?
A. Write as quickly as you can.
b. Speak English as much as you can.
C. Laugh more often.
小題3:When people laugh at your mistakes, what should you do?
A. Not care.            B. Be happy.        C. Feel worried.
小題4:What should you do when you make a mistake?'
A. Keep quiet.
b. Get angry.
C. Keep your sense of humor
小題5:What can we learn from the passage?
A. Anyone will make mistakes.
B. People never make mistakes.
C. Few people make mistakes.

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解

根據(jù)短文內(nèi)容,選擇正確答案.
Anger is a kind of feeling. Many things can make you angry. When your teacher gives you too much homework, when your team loses an important game, when a friend borrows your favorite thing and then breaks it, you can get really angry. Usually, your body tells you when you are angry. For example, you breathe(呼吸) faster, your face turns red, and you may want to break something or hit(打) someone, but sometimes, you hide(隱藏) your anger. For example, you may hide it in your heart. The problem is that if you do this, you may get a headache or your stomach may hurt. In fact, it’s not good to hide your anger, and it’s important for you to get angry sometimes. But anger must be let out in the right way, without hurting others or yourself. When you get angry, you can talk about it with other people It’s helpful to talk about your anger with an adult(成年人,大人), such as a parent, a teacher, etc. When you talk about anger, those bad feelings can start to go away. Here are some other things you can do when you start to feel angry: talk to a good friend; count from 1 to 100; give someone a hug(擁抱); go for a bike ride; think about good things, etc. Remember that how you act when you are angry can make everything better or worse. Don’t let your anger control you.
小題1:You may not get angry when __________.
A. there is too much homework on this weekend
B. your favorite basketball team wins the game
C. a friend breaks your favorite thing
小題2:________ shows that you are not angry.
A. Taking a faster breath
B. Getting a headache
C. Wanting to protect someone
小題3:According to the passage, you can do everything when you get angry except(除了) __________.
A. go for a bike ride
B. think about good things
C. say bad things to the people around you
小題4:The underlined(畫線的) word “control” in the last paragraph（段）means _______ in Chinese.
A．控制B．連接C．幫助D．失去
小題5:This passage is mainly(主要) about _________.
A. anger    B. excitement    C. happiness

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解


“Who needs a shopping mall (購物中心)if you have Taobao?”says Wang Lin,28,a writer in Beijing.
Taobao, China’s largest online shopping site （網(wǎng)上購物網(wǎng)站）,has become an important part of Wang Lin’s life. She spends lots of money on Taobao.
A growing number of Chinese Internet users like Wang have found the joys of online shopping .Most online shoppers are students or young workers .More women shop on line then men. Clothing and home-use products（產(chǎn)品）are the most popular on line.
It was reported that more than 250 billion（十億）Yuan was spent on online shopping last year,80% through Taobao.
Taobao means “l(fā)ooking for treasure” in Chinese. People can find almost everything they need on Taobao, from clothes to books, from candies to DVD players.
You may question the security of online shopping ,Wang Lin said, “”It’s very safe and convenient ( 便利的).Unless you receive the products from the sellers and are satisfied with them, the shop owner will not get the money .You can also get your money back if you want to return the products.”
小題1:What are the most popular online?
A. Candles and DVD players
B. Clothes and books.
C. Clothing and home-use products.
小題2:Taobao is ____________.
A. a shopping mall
B. an online shopper
C. an online shopping site
小題3:What does the underlined word “security” mean?
A．質(zhì)量    B安全   C 信譽(yù)
小題4:Which is the best title（標(biāo)題）of the passage?
A. Wang Lin’s life.
B. Online shopping in China.
C. Shopping on line is not safe.

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解


Most children like watching TV. It’s very interesting. By watching TV they can see and learn a lot and know many things about their country and the world. Of course ,they can also learn over the radio. But they can learn better and more easily on TV. Why? Because they can hear and watch at the same time. But they can’t see anything over the radio. TV helps to open children’s eyes. It helps to open their minds , too. They learn newer and better ways of doing things. Many children watch TV only on Saturday or Sunday evening. They are always busy with their lessons. But a few children watch TV every night. They go to bed very late. They can’ t have a good rest. How about you, my young friend?
小題1:A few children go to bed late because they ______
A．a(chǎn)re busy with their lessonsB．do their homework
C．watch TVD．listen to the radio
小題2:Children can’t see anything ______
A．in the radioB．on the radioC．on TVD．by watching TV
小題3:TV helps to open children’s ______
A．eyes and mindsB．mindsC．eyes or mindsD．eyes
小題4:Why do many children watch TV only on Saturday or Sunday evening? Because ______
A．TV is not goodB．they don’t like watching TV
C．they have no timeD．they want to play football
小題5:Children can study better and more easily on TV because ______
A．they like to watch TV
B．they can hear at the same time
C．they can watch at the same time
D．they can hear and watch at the same time

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解

There is not enough oil in the world now. As time goes by, it becomes less and less, so what are we going to do when it runs out? Perhaps we will go back to using horses, carriages and bicycles.
In the Second World War, some people didn’t use gas made from petroleum(石油) in their cars. They made gas from wood and plants instead. The car didn’t go fast, but they ran, so this was better than nothing. However, in the future, we can’t cut down all our trees to make gas; we need our trees for other things, too.
Besides different types of gas, we can also use electricity(電) to run our cars, but first we must make the electricity! Some countries have coal(煤) and they make electricity with that, but we might not always have coal, either. Other countries have big, strong rivers, and they can use the power of water to turn turbines(渦輪機(jī)) and make electricity more easily and cheaply.
We are also able to get power from the ocean tides. We put turbines into the mouth of the river. Then the tide comes in, the water turns the turbines and then it goes out, it turns them again.
Which of these ways will be used to run our cars in the future?
小題1:When might people have to go back to using horses and carriages?
A．When they are poor.
B．When they run out of oil.
C．When they need more exercise.
D．When there aren’t any big trees in the world.
小題2:What did some people use to make gas in the Second World War?
A．Water.B．Coal.
C．Wood and plants.D．Tides.
小題3:How many ways are suggested to make electricity in the passage?
A．2.B．5.C．4.D．3.
小題4:According to the passage, which of the following statements is TRUE?
A．There is more petroleum than we can use now.
B．Trees are needed for some other things besides making gas.
C．We got electricity from ocean tides in the old days.
D．Gas wasn’t used to run cars in the Second World War.
小題5:The passage is mainly about __________.
A．how to run our carsB．what to do when oil runs out
C．different types of gasD．the ways to make electricity

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解

Eating out is more popular in Britain today than it has ever been. It is reported that British people spend more eating out than cooking for themselves and eating at home. It seems that many British people are becoming more and more interested in how good their food tastes, and also how healthy it is.
However, eating out can also be expensive, so British people do not eat out every night. When having a date with friends, or having a birthday, many people like to go to a restaurant, and people often also eat in a restaurant before going to the cinema or the theater.
As in all cultures, there are many rules of manners about eating. The knife and fork should be used in the correct way. It is also impolite to speak with your mouth full then you are eating.
Most British cities have a large collection of food as well as British food, from the very cheap to the very expensive－ French, Italian, Indian, Chinese, Thai, Japanese and many, many more.
When people are too tired to cook after work, they often get a “takeaway”. This means that they order from a take－out restaurant by telephone, and then go to get it. Many take-out restaurants also send it to your house. All you have to do is to open the door, pay and eat!
小題1:When do British people often eat in a restaurant?
A．After having a birthday.B．Before watching a movie.
C．When they feel tired.D．If they want to have natural food.
小題2:Many people prefer to eat out nowadays because __________.
A．eating out is cheaper than cooking at home
B．they can learn more manners in the restaurant
C．people care more about their food than before
D．people don’t like to stay at home after work
小題3:From the fourth paragraph, we can learn that _________.
A．British dishes are very expensiveB．Japanese dishes are most expensive
C．British people like foreign foodD．French food is most popular
小題4: The “takeaway” is the food __________.
A．you order and take out of the restaurant
B．that is left when you are eating in a restaurant
C．you order but don’t need to pay at once
D．that is sold and ordered only on the phone
小題5:What is the best title(標(biāo)題) of the passage?
A．British restaurant cultureB．British table manners
C．Best restaurants in BritainD．Best food in Britain

查看答案和解析>>

同步練習(xí)冊答案