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【单选题】
You ________ do the work now. You can do it tomorrow.A.
needn’t to
B.
don't need
C.
don’t need to
D.
need to not
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举一反三
【简答题】若AX=3500H,CX=56B8H,当AND AX,CX指令执行后,AX=() A1400H B77F8H C0000H D0FFFFH
【单选题】Without a (an) ______ passport a tourist is forbidden to enter a country.
A.
operative
B.
effective
C.
valid
D.
efficient
【单选题】The lecture is so attractive that the audience are listening_________.
A.
attentively
B.
anxiously
C.
effectively
D.
absolutely
【单选题】若AX=3500H,CX=56B8H,当AND AX,CX指令执行后,AX=( ) A. 1400H B. 77F8H C. D.
A.
1400H
B.
77F8H
C.
0000H
D.
0FFFFH
【单选题】However，at times this balance in nature is _______ resulting in a number of possibly unforeseen effects.
A.
troubled
B.
disturbed
C.
confused
D.
puzzled
【单选题】Advertising is often the most _______ method of promotion.
A.
efficient
B.
efficiency
C.
effect
D.
effective
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