Official 30 Lec 3
答题结果:0/6
答题时间:0''
Question 1 of 6
What is the lecture mainly about?

A.

Evidence proving that water was once on Mars

B.

Scientific analyses currently being done on mineral samples from Mars

C.

Recent developments that could help determine whether life ever existed on Mars

D.

An approach to determining whether amino acids on Earth originated on Mars

我的答案:

正确答案:C

00:00
00:00
隐藏原文

译文