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______ many times, this radio receiver is found very sensitive.A、Being testedB、
______ many times, this radio receiver is found very sensitive.A、Being testedB、
游客
2023-11-06
59
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问题
______ many times, this radio receiver is found very sensitive.
选项
A、Being tested
B、Having been tested
C、Having tested
D、Testing
答案
B
解析
本题考查被动的完成时。由题干可知,所填分句的逻辑主语应该是主句的主语this radio receiver,它和test应存在着被动关系,故排除C 和D 。测试的时间在发现灵敏度很高之前,应用完成时的现在分词形式在句中作状语,故答案为B 。
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