Official 4 Lec 3
Question 1 of 6
What does the professor mainly discuss?

A.

His plans for research involving moving rocks

B.

A difference between two geological forces that cause rocks to move

C.

Theories about why desert rocks move

D.

Reasons why geologists should study moving rocks

正确答案:C

显示答案
进入答题
00:00
00:00
隐藏原文

译文

精听文本