单项选择题

A．It is the nerve cells of a computer.
B．It is the brain of a computer.
C．It is the eye of a computer.
D．It is the heart of a computer.
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单项选择题
A．Because her parents like traveling.B．Because her parents like history.C．Because traveling in such places costs less.D．Because her parents want to reinforce the stuff they learned in school about history.
A．Because her parents like traveling.
B．Because her parents like history.
C．Because traveling in such places costs less.
D．Because her parents want to reinforce the stuff they learned in school about history.
单项选择题
A．He had promised to do so.B．He had this kind of training before.C．He didn’t want to make the crowd disappointed.D．He needed the great amount of money.
A．He had promised to do so.
B．He had this kind of training before.
C．He didn’t want to make the crowd disappointed.
D．He needed the great amount of money.
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