【题目】________ is often the case, some British people are not familiar with different cultures.
A. Which B. As C. It D. That
在线课程【答案】B
【解析】
试题分析：考察固定搭配。A. 哪一个B.正如 C它. D.无意义。As引导的非限制性定语从句，as在从句中做主语。As is often the case情况常常如此。句意：有些英国人不熟悉不同的文化，这是常有的事。故选B。