托福考试

根据网考网考试中心的统计分析，以下试题在2017/10/10日托福考试习题练习中，答错率较高，为：79%
【单选题】 The "white chalk cliffs of Dover" are mentioned in line 14 of the passage to
A．( show where the plankton sediment first began to build up
B．( provide an example of a plankton buildup that scientists cannot explain
C．( provide all example of the buildup of plankton sediment
D．( indicate the largest single plankton buildup on Earth

网考网参考答案：C，答错率：79%
网考网试题解析：
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