问题
选择题
Today some people call Amsterdam the “City of Bicycles”____ the convenience for bicycles there.
A．while
B．before
C．because
D．because of
答案
答案：D
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Today some people call Amsterdam the “City of Bicycles”____ the convenience for bicycles there.
A．while
B．before
C．because
D．because of
答案：D