Experimentsofthiskindinboththe

Experiments of this kind___in both the U.S. and Europe well before the Second World War

A．have conducted

B．have been conducted

C．had conducted

D．had been conducted

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(2012年南京高三模考)
If something is “dog-eat-dog”，it is a situation ________people have to take care of themselves and look after their own interests.

A．on which

B．in which

C．by which

D．for which

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By nine o'clock，all the Olympic torch bearers had reached the top of Mount Qomolangma，________appeared a rare rainbow soon.

A．of which

B．on which

C．from which

D．above which

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It’s quite warm now.Leaving the heating on all the time ________ electricity.

A．uses

B．wastes

C．costs

D．spends

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All her energies are ________ upon her children and she seems to have little time for anything else.

A．absorbed

B．devoted

C．directed

D．focused

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－Brad was Jane’s brother!
—________ he reminded me so much of Jane!

A．No doubt

B．Above all

C．No wonder

D．Of course

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