It was Professor Smith ________did the experiment in the lab yesterday evening.A

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问题 It was Professor Smith ________did the experiment in the lab yesterday evening.

选项 A、whom
B、who
C、what
D、which

答案 B

解析本句是强调句型的基本结构“It is／was+被强调部分(通常是主语、宾语或状语)+that／who+其他部分”。构成强调句的It本身没有词义。强调句中的连接词一般用that，当强调主语且主语指人时也可用who，其余情况下均使用that。本题中被强调部分为充当主语的Professor Smith，指人，因此应该选用连接词who，故选B。

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It was Professor Smith ________did the experiment in the lab yesterday evening.A

DoctorGreenwentonwithhisexperimentonhumanbeing______thedebategoingon

ProfessorBlackhadus(write)______compositioneveryFriday.write

Yesterday,thesecretary(give)______thetasktomakearrangementsfortheann

I______anoldfriendofmineinthestreetyesterday.A、wentbyB、ranintoC、lo

—IsawAnnainthelibraryyesterday.—You______her;sheisstillabroad.A、mustn

A—presidentB—deanofstudiesC—professorD—lecturerE—AlmaMaterF—alumnusG—st

A—presidentB—deanofstudiesC—professorD—lecturerE—AlmaMaterF—alumnusG—st

A—presidentB—deanofstudiesC—professorD—lecturerE—AlmaMaterF—alumnusG—st

Mysister’sprofessorhadher______herpapermanytimesbeforepresentingitt

BythetimeIlefttheschool,theprofessor______thatclassfortwoyears.A、h

[originaltext]M:EnglishLanguageCenter.HowmayIhelpyou?W:Yes.I’mcalli

HenryIIIdidn’tknowmuchaboutbiology.Hewentthroughsixwivesbackin

Largecompaniesneedawaytoreachthesavingsofthepublicatlarge.The

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非现场风险监测分析的基本方法不包括（ ）。A.水平比较分析法 B.纵向比较分

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