There is still a vast economic______between developing countries and the United States. -焚题库

来源：焚题库 2019-07-31

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Part 1 Vocabulary Selection

There is still a vast economic______between developing countries and the United States.

A.cheat <br/>
B.chasm <br/>
C.chase <br/>
D.charm <br/>

正确答案：B

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