2021中考英語(yǔ) 科普說(shuō)明篇 滾動(dòng)組合訓(xùn)練（一）

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1、 科普說(shuō)明篇 滾動(dòng)組合訓(xùn)練（一） (時(shí)間：30分鐘) 3 Ⅰ.完形填空。 Trees in the Amazon rainforest(雨林)are showing scientists the past so the scientists can learn what will happen in the future. Have you 1 tree rings?Some trees create rings every year 2 they grow. These rings can be 3 in tree trunks(樹(shù)干)when the

2、trees are cut down. A tree’s 4 can tell us how old the tree is, but UK scientists have 5 a way of learning about the climate of the rainforest in the past from the tree rings. Growing in the Amazon rainforest, some trees only have short roots. It means that the trees depend on rainwater, 6

3、 the water that is naturally deeper underground. So the rings of the tree trunks help scientists understand the rainfall(降雨量), 7 the climate of the Amazon rainforest over the last 100 years. What scientists want to know, however,is how the rainforest will be 8 by the world’s rising temperat

4、ures. Will it become wetter or drier? The Amazon rainforest is 9 the “l(fā)ungs of the earth” for the trees there take in a lot of carbon dioxide(CO2)and produce oxygen every day. A warming world could have a very bad influence on the important forest. But 10 more information about the past, scien

5、tists hope to know what one of the most important rainforests in he world will be like in the future. ( )1.A.heard about B.paid for C.looked after D.agreed with ( )2.A.since B.as C.although D.after ( )3.A.heard B.drawn C.pr

6、oduced D.seen ( )4.A.rings B.leaves C.fruits D.roots ( )5.A.changed B.forgotten C.discovered D.imagined ( )6.A.rather than B.as for C.because of D.thanks to ( )7.A.yet B.e

7、ver C.even D.still ( )8.A.destroyed B.remembered C.expected D.influenced ( )9.A.bad for B .known as C.angry with D.different from ( )10.A.except B.including C.with D.like Ⅱ.閱讀理解。 A

8、Radio,telephone and television are widely used in the world.When you switch on the radio,you can listen.But when you use telephone,not only can you listen to others but also you can chat with them;however,you cannot see anything at all.Television is much better than both of them.People can watch TV

9、and listen to it,but they cannot take part in what they see. Today,some people are using a new type of telephone called vision phone.With it two people who are talking can see each other. Vision phones can be of great use when you have something to show the person whom you are calling.It may also

10、have other uses in the future.Some day you may be able to call up a library and ask to read a book right over your vision phone.You may be able to do the shopping through it,too.Perhaps in the near future,vision phone will come into wide use in our everyday life. ( )11.According to the passage, we

11、 can guess that the _____ was invented last. A.radio B.television C.telephone D.vision phone ( )12.Maybe the vision phone can take the place of _______ some day. A.the radio B.the telephone C.the television D.all the above ( )13.Through a vision

12、 phone we can __________. A.take medicine B.order what we need C.travel around the world D.try on clothes ( )14.In the future,you can use a vision phone to ________. A.read a book in the library B.ask a librarian to read a book for you C.ask a librarian to bring you a book D.ask a libraria

13、n to do some shopping for you ( )15.Which of the following is not correct? A.Vision phone is more advanced than radio,telephone or television. B.People will use vision phone in the future more than now. C.Vision phone will be helpful in people’s daily life. D.It is impossible to do shopping th

14、rough vision phone. B In ancient Chinese stories,the moon is home to Chang’e and her pet rabbit Yutu.Now,Chang’e and Yutu are really there. On Dec.2,2013,the Chang’e-3 lunar probe(月球探測(cè)器)took off. On Dec.14,2013,it landed successfully on the moon.Several hours later,Yutu,China’s first moon rover(

15、月球車),“walked” out of the probe and onto the moon. Yutu is a big robot that weighs 140 kg.It is about 1.5 meters long and 1.1 meters tall.It has six wheels and travels at 200 meters per hour. There are cameras on both Yutu and Chang’e-3.They can take pictures of each other.That’s how Yutu got its f

16、irst picture on the moon. Yutu and Chang’e-3 will explore(探索）the moon. Yutu can walk around and work for three months.It can look for natural resources(資源）on the moon.Chang’e-3 can work at the landing site for one year and it can watch the space from the moon. They both get energy from the sun.So

17、 they “get up” to work when the sun rises,and “go to sleep” at night. China is now the third country in the world to soft-land on the moon after the US and the former Soviet Union. Also,China is planning to send its Chang’e-5 lunar probe around 2017.The probe will fly back to the Earth and bring n

18、atural resources from the moon. When will China fly a human to the moon?There’s no plan yet.But the door is now open. ( )16.The Chang’e-3 lunar probe was sent into space to ________. A.land on Mars B.explore the moon C.build a space station D.carry the astronauts into space ( )17.According

19、 to the passage, Yutu can_______ . A.fly around in space B.look for natural resources C.watch the space from the moon D.bring natural resources to the Earth ( )18.Yutu can work on the moon for___________ . A.six years B.one year C.three months D.two weeks ( )19

20、.How many countries have soft-landed on the moon? A.Seven. B.Five. C.Four. D.Three. ( )20.Which of the following is NOT true according to the passage? A.Yutu is a big robot with six wheels. B.Yutu and Chang’e-3 work day and night. C.Yutu and Chang’e-3 can take phot

21、os of each other. D.The Chang’e-5 lunar probe won’t carry a human to the moon. Ⅲ.任務(wù)型閱讀。 Have you considered using plants when you want to make your rooms more beautiful? Indoor(室內(nèi)的)plants are great for adding interest to a room and are especially helpful when used for decorating(裝飾)small rooms.

22、 These plants can be either living or artificial(人造的).You can choose either of them. If you choose to decorate your house with living plants,then you should know that you have to take care of the plants.Living plants will need watering.You should keep them at proper room temperature or they may die

23、.Clearing out the dead plants will cost you time and money.Please take good care of the living plants. If you are a person that is very busy and yet want plants to make your work place brighter,then you can choose to decorate it with silk plants.These plants are made of soft silk.They look like rea

24、l plants whether they are in a hanging basket or sitting on a desk in your work place.Silk plants need little care.But you should often clean them so they won’t look dirty. 閱讀短文，回答下面的問(wèn)題。 21.What should you do if you choose to use living plants? __________________________________________________

25、22.What will happen to the plants if the room temperature isn’t proper? __________________________________________________ 23.What are silk plants? __________________________________________________ 24.Why should you often clean the silk plants? _________________________________________________

26、_ 25.What is the passage mainly about? __________________________________________________ 參考答案： 組合訓(xùn)練（一） Ⅰ.1—5ABDAC6—10ACDBC Ⅱ.11—15DBBAD16—20BBCDB Ⅲ.21.We should take good care of them.22.They may die.23.Plants that are made of soft silk.24.To make them look clean.25.Two kinds of plants to make our rooms more beautiful.