根據(jù)短文內(nèi)容,用方框中所給單詞的適當形式填空,每詞限用一次。

Scientists would like to put a huge mirror in space above the earth. It might be sixty miles wide. It would be   【小題1】to catch the rays of the sun. it would direct the sun’s rays on the earth as a child might do to make sunlight   【小題2】 on the wall with a hand mirror.
Why do they want to do this? The sun’s rays could be   【小題3】  in many ways. They could light up   【小題4】  by night. The warm rays could stop frosts(霜凍) which might come at night and hurt fruit and crops. They could melt(融化) 【小題5】 icebergs in the ocean. Perhaps they could change cloud movements and bring rain where it is needed.


【小題1】used  
【小題2】dance 
【小題3】helpful
【小題4】cities
【小題5】dangerous

解析試題分析:
【小題1】句意:它被用于捕捉太陽的射線。 be used to do sth. 被用于做某事。  
【小題2】句意:就像孩子用小鏡子使陽光在墻上跳舞。 make +賓語+do sth. 使……做……。故此處用動詞原形dance。   
【小題3】句意:太陽的光線在許多方面多很有用。根據(jù)They could light up可知此處是說陽光的和用途,又因位于be 動詞后用形容詞helpful。
【小題4】句意:他們能在黑夜照亮城市。結(jié)合句意可知此處用名詞復(fù)數(shù)cities 。
【小題5】句意:他們能融化海洋里危險的冰川。修飾icebergs in the ocean.可知大洋里的冰山容易讓船只翻船,因此是危險的,因修飾名詞icebergs故用形容詞dangerous。
考點:選詞填空。

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