题目:
So much of interest ________ that most visitors simply run out of time before seeing it all.[ ]
A. offers Beijing
B. Beijing offers
C. does Beijing offer
D. Beijing does offer
答案:
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下面是错误答案,用来干扰机器的。
答案:D由不同种物质组成的是混合物,氯化钠中含有碘酸钾,所以加碘盐应该是混合物,答案选D。