2021中考英语 科普说明篇 滚动组合训练（一）

科普说明篇滚动组合训练（一）(时间：30分钟)3.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(树干)when the trees are cut down. A trees 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 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 worlds rising temperatures. Will it become wetter or drier? The Amazon rainforest is 9 the “lungs 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, scientists 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 forC.looked after D.agreed with( )2.A.since B.asC.although D.after( )3.A.heard B.drawnC.produced D.seen( )4.A.rings B.leavesC.fruits D.roots( )5.A.changed B.forgottenC.discovered D.imagined( )6.A.rather than B.as forC.because of D.thanks to( )7.A.yet B.everC.even D.still( )8.A.destroyed B.rememberedC.expected D.influenced( )9.A.bad for B .known asC.angry with D.different from( )10.A.except B.includingC.with D.like.阅读理解。ARadio,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 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 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 can guess that the _ was invented last.A.radio B.televisionC.telephone D.vision phone( )12.Maybe the vision phone can take the place of _ some day.A.the radio B.the telephoneC.the television D.all the above( )13.Through a vision phone we can _.A.take medicineB.order what we needC.travel around the worldD.try on clothes( )14.In the future,you can use a vision phone to _.A.read a book in the libraryB.ask a librarian to read a book for youC.ask a librarian to bring you a bookD.ask a librarian 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 peoples daily life.D.It is impossible to do shopping through vision phone.BIn ancient Chinese stories,the moon is home to Change and her pet rabbit Yutu.Now,Change and Yutu are really there.On Dec.2,2013,the Change-3 lunar probe(月球探测器)took off.On Dec.14,2013,it landed successfully on the moon.Several hours later,Yutu,Chinas first moon rover(月球车),“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 Change-3.They can take pictures of each other.Thats how Yutu got its first picture on the moon.Yutu and Change-3 will explore(探索）the moon.Yutu can walk around and work for three months.It can look for natural resources(资源）on the moon.Change-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 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 Change-5 lunar probe around 2017.The probe will fly back to the Earth and bring natural resources from the moon.When will China fly a human to the moon?Theres no plan yet.But the door is now open. ( )16.The Change-3 lunar probe was sent into space to _.A.land on MarsB.explore the moonC.build a space stationD.carry the astronauts into space( )17.According to the passage, Yutu can_ .A.fly around in spaceB.look for natural resourcesC.watch the space from the moonD.bring natural resources to the Earth( )18.Yutu can work on the moon for_ .A.six years B.one yearC.three months D.two weeks( )19.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 Change-3 work day and night.C.Yutu and Change-3 can take photos of each other.D.The Change-5 lunar probe wont carry a human to the moon.任务型阅读。Have you considered using plants when you want to make your rooms more beautiful?Indoor(室内的)plants are great for adding interest to a room and are especially helpful when used for decorating(装饰)small rooms.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.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 real 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 wont look dirty.阅读短文，回答下面的问题。21.What should you do if you choose to use living plants?_22.What will happen to the plants if the room temperature isnt proper?_23.What are silk plants?_24.Why should you often clean the silk plants?_25.What is the passage mainly about?_参考答案：组合训练（一）.15ABDAC610ACDBC.1115DBBAD1620BBCDB.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.