Your attention, please! ________ today is Professor Yu Dan from Beijing Normal U

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Your attention, please! ________ today is Professor Yu Dan from Beijing Normal U

题型：不详难度：来源：

Your attention, please! ________ today is Professor Yu Dan from Beijing Normal University. 
A．Have joined usB．To join usC．Joining usD．Join us

答案
C
解析
略
举一反三

Suddenly I heard a terrible noise ahead. I looked forward _______ what was happening, but found nothing.
A．to seeingB．to seeC．for seeingD．and see

题型：不详难度：| 查看答案

A _______ broke the newly-planted tree, ______ the planter feel very angry and sad.
A．falling stone; madeB．fallen stone; and made
C．falling stone; makingD．fallen stone; to make

题型：不详难度：| 查看答案

all her spare time to her study during the three years, Tedy finally took the first place in her school in the College Entrance Examination and received the admission notice from her dream university.
A．DevotedB．Having devotedC．To be devotedD．She had devoted

题型：不详难度：| 查看答案

This method，     in areas near Shanghai，    in a marked rise in total production．
A．trying；resulting；B．trying；resulted
C．tried；resulting D．tried；resulted

题型：不详难度：| 查看答案
The new safety problem of contaminated（受污染的）milk is much more widespread，           at least 22 dairy companies and their milk products that have appeared nationwide.
A．to involveB．involvedC．involvingD．being involved

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