Environmental officials insist that something be done to______acid rain.

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问题 Environmental officials insist that something be done to______acid rain.

选项 A、curb
B、sue
C、detoxify
D、condemn

答案A

解析 B．sue(控告)；c．detoxify(使解毒)；D．condemn(谴责，声讨)。综合各选项，只有当A项填入空格，句意与逻辑相符，其余各选项句意均与逻辑相悖，故答案为A。

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