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The protection device can eliminate the faults______they cause more damage.A、unl
The protection device can eliminate the faults______they cause more damage.A、unl
游客
2024-10-08
26
管理
问题
The protection device can eliminate the faults______they cause more damage.
选项
A、unless
B、until
C、before
D、although
答案
C
解析
unless意为“如果不,除非”,相当于if not,用于条件状语从句。until意为“直到”,由until引导的时间状语从句,所对应主句的谓语动词通常为延续性动词。before意为“在……之前。although意为“虽然,尽管”,引导让步状语从句。
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