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It is thought that one billion people in the world,_____ is half the world’s workers, earn their living by farming.
A.ifB.thatC.whichD.what

答案
B
解析
句中“half the world’s workers”是对“one billion people in the world”的补充说明。“that is”是“that is to say”的省略说法
【标签】插入语和定语从句
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试题【It is thought that one billion people in the world,_____ is half the world’s wor】;主要考察你对句式等知识点的理解。[详细]
举一反三
.—Must I turn off the gas after cooking ?  --Of course . You can never be ___ careful with that.
A.enoughB.tooC.soD.very

题型:不详难度:| 查看答案
The British are not so familiar with different cultures and other ways of doing things, ___________ is often the case in other countries
A.asB.thatC.soD.it

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The old couple married for 40 years and never once____ with each other.
A.they had quarreled.B.they have quarreled
C.have they quarreledD.had they quarreled.

题型:不详难度:| 查看答案
The key point is not who said the words, _____ they are true or not.
A.but whetherB.and whetherC.but whyD.and how

题型:不详难度:| 查看答案
----Why did you go back to the shop?
-----I left my friend______there.
A.waitingB.to waitC. waitsD. waited

题型:不详难度:| 查看答案
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