考博考试

根据网考网考试中心的统计分析，以下试题在2019/1/30日考博习题练习中，答错率较高，为：66%
【单选题】 The passage suggests that if there were a slight global warming at the present time, it would be ______.
A．easy to measure the exact increase in temperature because of the abundances of temperature recording stations throughout the world
B．difficult to prove that the warming was caused by the burning of fossil fuels
C．easy to demonstrate the effects of the warming on the water vapor in the atmosphere
D．difficult to measure the increase of CO₂ in the atmosphere because of local variations in amount

网考网参考答案：B，答错率：66%
网考网试题解析：
读懂最后一段，可选出答案B。 查看试题解析出处>>