选修八 unit 1
学案二
第一部分:语法和词汇运用检测
21. ---what attracts people to
---this is ____ each year a great number of people from all over the world try to ____ to
a. how; immigrate b. why; immigrate c. because; remove d. why; remove
22. you can easily find the line, which is _______ with an arrow.
a. noted b. made c. signed d. marked
23.the seawater takes ____资源难易程度:★★★★★★★★★★★★★★★
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