Official 13 Lec 2
答题结果:0/6
答题时间:0''
Question 1 of 6
What is the class mainly discussing?

A.

How beavers select the ecosystem where they live

B.

How ecosystem differ form on another

C.

The impact of human activities on an ecosystem

D.

The role of one species in an ecosystem

我的答案:

正确答案:D

00:00
00:00
隐藏原文

译文