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题型:单词拼写 题类:常考题 难易度:普通

根据句意和汉语注释,在相应的横线上,写出单词的正确形式。

(1)、It is not polite to laugh at others' (缺点), boys and girls.

(2)、It is  (确信的) that the government will take action to prevent the environment getting worse.  

(3)、Last spring, the viruses  (扩散) all of the town in a very short time.  

(4)、The scientists are devoting themselves to   (开发) plants that can grow on Mars. 

举一反三
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