______ many times, this radio receiver is found very sensitive.

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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

解析语法结构题。本句的难点是：完成时的现在分词形式在本句中作时间状语，表明测试的时间在发现灵敏度很高之前，being tested不能够表达这一含义，而having tested 和testing动作的主体和逻辑主语为人，造成时间状语的逻辑主语和主句的主语不一致，故只能选B 。本句的意思是：经过多次测试以后，发现这台无线电接收机的灵敏度很高。

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专业英语四级

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OnPublicSpeakingI.People’sfrequentresponsetogivingtheirfirstspeech:feel【T1】________【T1】________II.Th

A、Thenationaldifferenceshaveincreased.B、Thenationaldifferenceshavedecreased.C、Thedifferenceshavechangedagreatdea

ThingstobeTaughtinEverySchoolI.Introduction:Importanceofstudents’abilitytodealwiththerealworld.A.Speaker

Therearemanywaysinwhichthephenomenaoflanguageandcultureareintimatelyrelated.Allphenomenaareuniquetohuman

(1)Inthetownthereweretwomutes,andtheywerealwaystogether.Earlyeverymorningtheywouldcomeoutfromthehousewh

A、Confident.B、Diffident.C、Negative.D、Positive.B态度题。在谈到中年人是否容易找到工作时，受访者提到：Inmanyways，workersintheir40stodayhaveitgre

Studentsarebecomingbusierandbusier.Theyhavemorecoursestotake,moreexpectationstomeet,andmorepressuretosuffe

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