科普说明篇

滚动组合训练（一） (时间：30分钟)

Ⅰ.完形填空。 C.even D.still

Trees in the Amazon rainforest(雨林)are ( )8.A.destroyed B.remembered showing scientists the past so the scientists can C.expected D.influenced learn what will happen in the future. ( )9.A.bad for B .known as

Have you 1 tree rings?Some trees create C.angry with D.different from ( )10.A.except B.including 3 in tree trunks(树干)when the 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 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 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 for C.looked after D.agreed with ( )2.A.since B.as C.although D.after ( )3.A.heard B.drawn C.produced 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.ever C.with D.like Ⅱ.阅读理解。 A 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 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.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 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

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参考答案： 组合训练（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.