His lack of professional knowledge _______for the failure of the experiment. A．a

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His lack of professional knowledge _______for the failure of the experiment.

A．accounted

B．explained

C．counted

D．contributed

答案

解析

略

举一反三

I want to improve my English. Don’t __ to correct me if I make a mistake.

A．mind

B．hesitate

C．desire

D．seek

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The word “cool” has expanded to _________ many different meanings.

A．take on 　

B．put on

C．carry on 　

D．get on

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While working on the farm， the students ________ a good knowledge of plant life

A．held up

B．picked up

C．turned away

D．put down

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We hadn’t seen each other for years and he had changed a great deal, so I didn’t _______ him at first.

A．realize

B．repeat

C．know

D．rec

ognize

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Believe it or not, I was completely _____ by my students’ trick on April Fool’s Day.

A．taken off

B．taken out

C．taken in

D．taken away

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