閱讀短文，然后根據(jù)內(nèi)容完成問題。

　　Dr Ray：Then you must thank trees for that, too．Trees are natural air conditioners．(A)他們吸掉空氣中的廢氣，然后把氧氣釋放到空氣中。How many people are there in your class, Judy?

　　Judy：Forty-six．

　　Dr Ray：Well, one and a half hectares of trees could produce enough oxygen to keep your whole class alive and healthy for a year．

　　Judy：That's wonderful．

　　Dr Ray：(B)Trees cool the air as well as clean it．(C)Three trees can do the job of 15 air conditioners running almost all day．

　　Judy：You certainly know a lot about trees, Doctor Ray．

　　Dr Ray：Thank you, Judy, but I don't, really．Scientists are only now beginning to understand them．(D)________, did you know that when insects attack a tree, it can warn its neighbours? The trees can then protect themselves by producing a chemical that makes their leaves taste nasty．And some trees can join their roots together underground, and pass food and water around．Trees are communicating with one another, but we don't know how．

　　Judy：Are trees in danger?

　　Dr Ray：In great danger．We cut down and burn millions every year but we replace hardly any of them．We are destroying our best fighters against pollution．

1．將(A)譯成英語：________

2．將(B)部分轉(zhuǎn)換成：Trees ________　________ cool the air ________　________ clean it．

3．將(C)部分翻譯成漢語：________

4．在(D)處填上一個合適的詞語：________

5．找出文中描寫樹對空氣作用的兩個詞：________　________

答案：
解析：

　　1．They take harmful gas from the air, and release oxygen into the air．

　　2．not　only　but　also

　　3．三棵樹就能夠做15臺空調(diào)近乎一天的工作。

　　4．For example

　　5．cool　clean


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