考博考试

根据网考网考试中心的统计分析，以下试题在2018/3/15日考博习题练习中，答错率较高，为：54%
【单选题】According to the author, those who wanted to work as scientists ______.
A. were the middle class or richer people
B．would be employed by the state
C．had to prove their fitness before they began their career
D．were free to set up their own offices
网考网参考答案：C，答错率：54%
网考网试题解析：
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