四六级考试

【单选题】 ______is known to the world, Mark Twin is a great American writer.
A．Which
B．As
C．That
D．It

网考网参考答案：B
网考网解析：
[分析] as在用来指代整个一句话、引导非限制性的定语从句时，既可指代前面说过的也可指代后面将要说到的；which在引导此类从句时，只能指代前面说过的。如：As might be expected，the response to file question was very mixed. (也可说：The response to the question was very mixed，as might be expected，)New Concept English is intended for foreign students，which is known to all of us. (不能说：Which is known to all of us，New Concept English is intended for foreign students.) 查看试题解析出处>>