单项选择题

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A.Because it stimulates your nerve activity.
B.Because it keeps you calm.
C.Because it strengthens your memory.
D.Because it interferes with your reasoning ability.
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单项选择题
A.He was not happy with the new director.B.He was not qualified to be an engineer.C.He wanted to travel.D.He found his job boring.
A.He was not happy with the new director.
B.He was not qualified to be an engineer.
C.He wanted to travel.
D.He found his job boring.
单项选择题
A.11-week course for control duty.B.11-week course for patrol duty.C.9-week course for control duty.D.9-week course for patrol duty.
A.11-week course for control duty.
B.11-week course for patrol duty.
C.9-week course for control duty.
D.9-week course for patrol duty.
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