29.__________ when you are on the bus or bike.
A. Radio can be listened
B.TV can be watched
C. Radio can be listened to
D. TV can be used
第1题:
A.mustn't
B.can't
C.needn't
第2题:
Must I stay at the office this afternoon? ---No, you ______.
A、don’t
B、needn’t
C、don’t need
D、can’t
第3题:
A.Must; needn’t
B.Can; can’t
C.May; mustn’t
D.Can; mustn’t
第4题:
A、wouldn’t have seen
B、shouldn’t have seen
C、mustn’t have seen
D、can’t have seen
第5题:
A、will not
B、may not
C、can't
D、needn't
第6题:
关于汽车CAN-BUS总线系统说法错误的是 。
A.CAN-C总线可以单线模式运行
B.CAN-B总线可以单线模式运行
C.CAN-BUS总线是双绞线物理结构
D.CAN-BUS总线实行双向数据传输