托福考试

根据网考网考试中心的统计分析，以下试题在2018/12/9日托福考试习题练习中，答错率较高，为：40%
【单选题】 Most geologists believe — from the remains of tiny marine plants and animals that died millions of years ago.
A．(what was formed petroleum
B．(that petroleum was formed
C．(when petroleum formed
D．(petroleum that formed

网考网参考答案：B，答错率：40%
网考网试题解析：
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