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问题 单项选择题

下列指令中，有语法错误的是( )。

A．OUT DX，AL

B．JMP WORD PTR [BX+11H]

C．CALL 2000H:0110H

D．MUL AX，[DI]

答案

参考答案：D

选择题

It is third time that he______ his homework since he______ to this school

A doesn’t finish; comes      B hadn’t finished; came 

C. hasn’t finished; came    D didn’t finish; came
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选择题

The doctor told Sara to ____ on smoking but she just couldn’t.

A．take down

B．set down

C．cut down

D．turn down
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