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【判断题】
职业活动的最基本要求是爱岗敬业。A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】Cars, buses and bikes ______ stop when the traffic light is red. [ ]
A.
must
B.
can
C.
may
D.
need
【单选题】Be careful . You _______ cross the road when the traffic light is red . The traffic is heavy at this time of day .
A.
must
B.
mustn’t
C.
can
D.
needn’t
【单选题】All the cars _____ stop when the traffic light is red. [ ]
A.
can
B.
need
C.
may
D.
should
【单选题】You _________ drive on when the traffic light is red.
A.
can’t
B.
needn’t
C.
mustn’t
D.
may not
【简答题】With the help of 4G networks, traffic light cycle period can be adjusted according to ______.
相关题目：
【单选题】You _________ drive on when the traffic light is red.
A.
can’t
B.
needn’t
C.
mustn’t
D.
may not
参考解析：
知识点：
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