考博考试

根据网考网考试中心的统计分析，以下试题在2018/8/8日考博习题练习中，答错率较高，为：69%
【单选题】 During the Middle Ages, productivity of labor ______.
A．was a primary concern of society
B．was hampered by class relationships
C．began to improve over levels reached by the Greeks
D．was in a period of technical progress

网考网参考答案：B，答错率：69%
网考网试题解析：
可在第四句话“The social system of fixed... the Middle Ages (and in some areas much longer) itself hampered improvement.”找到。A社会焦点；C超过了希腊研究高度；D技术进步时期；均不符文意。 查看试题解析出处>>