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外语
______ many times, this radio receiver is found very sensitive.
______ many times, this radio receiver is found very sensitive.
admin
2010-04-24
55
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
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,它和分句的谓语动词存在着被动关系,从而排除C 和D 。又因为完成时的现在分词形式在句中作时间状语,表明测试的时间在发现灵敏度很高之前,而A being tested不能够表达这一含义,故答案为B 。
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专业英语四级
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