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Do you remember a certain occasion ________ you were in trouble and at that moment I gave you a hand.
A.whenB.whichC.whyD.where

答案
A
解析

核心考点
试题【Do you remember a certain occasion ________ you were in trouble and at that mome】;主要考察你对名词等知识点的理解。[详细]
举一反三

It was not until all the milu deer ________ that we realized we should build a natural park to protect them.
A.died offB.died away C.died out D.died down

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.The other day I was showing the boys the weekly chemistry experiment when, ________ I knew it, the mixture was bubbling over everywhere.
A.ifB.beforeC.thoughD.unless

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Since the Obama administration took office, the China—US relations ________ positive development thanks to joint efforts of both sides, President Hu said at the Nuclear Security  Summit in Washington, April,12,2010.
A.witnessedB.were witnessedC.had witnessedD.have witnessed

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----- Can you use chopsticks, John?
----- ________ . I once stayed in China for two years.
A.No problemB.It all depends
C.I’m sorry, but yesD.You can forget it

题型:不详难度:| 查看答案

---Excuse me, sir, is this seat taken?
---_______.
A.Sure, you may take itB.Certainly. Help yourself
C.No. I don’t think soD.No. I don’t hope so

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