Question

_________you have a rich knowledge of Chinese history, try acting as a guide for these    foreign visitors.

A．Unless

B．Though

C．Now that

D．Ever since

Answer 1

C

试题分析：句意：既然你有丰富的中国历史知识，那就试着担当这些外国游客的导游。A. Unless 除非，如果不；B. Though 尽管，虽然；C. Now that既然，由于；D. Ever since自从。根据句意可知选Ｃ。
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