As we all know ,Columbus America and Edison light bulbs.A．disco

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As we all know ,Columbus America and Edison light bulbs.

A．discovered ; invented	B．invented ; discovered
C．discovered ; discovered	D．invented ; invented

答案

解析

试题分析：句意：我们都知道，哥伦布发现了美洲，爱迪生发明了电灯。discover发现，原来就有后来被人们发现; invent发明，创造以前没有的东西，根据句意，故选A

举一反三

Jack，please help me the picture on the wall.

A．put off

B．put up

C．put into

D．put on

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—I have bought a new watch .
—Where and when you it ?

A．did ; buy

B．do ; buy

C．have ; bought

D．will ; buy

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Computers in everyday life in this country before long .

A．will be used

B．is used

C．will use

D．was used

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“Mr. Zhu, you’d better too much meat . You’re already over weight .” said the doctor .

A．not to eat

B．to eat

C．eat

D．not eat

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Lily eat lots of desserts after supper last year, so she was very fat then.

A．used to

B．was used to

C．got used to

D．had been used to

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