题目内容

一、单项填空(共15小题;每小题1分，满分15分)

从A、B、C、D四个选项中，选出可以填人空白处的最佳选项。

() 1. We work together to achieve our common purpose：  world that is safer, cleaner and healthier than one we are now living in.

   A. the, /   B. a,/   C. the,the   D. a,the

 D

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