问题
选择题
30. It is a good city for cycling because it is flat and ________is convenient for bikes.
A．however
B．what’s more
C．therefore
D．Besides
答案
答案：C
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30. It is a good city for cycling because it is flat and ________is convenient for bikes.
A．however
B．what’s more
C．therefore
D．Besides
答案：C