Official 16 Lec 1
Question 6 of 6
What does the professor mean when he says this:

A.

Lechuguilia Cave is not completely absent of water

B.

Lechuguilia Cave is not totally safe to explore

C.

Water long ago flowed through Lechuguilia Cave

D.

Scientists do not agree about how Lechuguilia Cave was formed

正确答案:A

显示答案
进入答题
00:00
00:00
隐藏原文

译文

精听文本