The study of the end－Permian mass extinction is hindered by all of the following EXCEPT __

The study of the end-Permian mass extinction is hindered by all of the following EXCEPT ______.

A．the lack of experienced researchers

B．lack of access to southern China

C．lack of relevant rock samples

D．lack of well-preserved fossils

请帮忙给出正确答案和分析，谢谢！

参考答案

您可能感兴趣的试题

What distinguishes the end－Permian mass extinction from other similar devastations？A．Chang

答案解析
Which of the following is TRUE？A．Environmental changes must have caused the end－Permian ma

答案解析
听力原文：Because of the decreasing sales of the products at the end of the year, the sales

答案解析
What do the speakers agree upon in the end？A．They agree to meet in the alley to study.B．Th

答案解析
It can be inferred from the third paragraph thatA．maybe there is a shrinking middle-end ma

答案解析
The author suggests at the end of the passage tha

答案解析