1、 问题:Sometimes, the obstacles in the way of trading affect the mutual relationship ( )
选项:
A:usefully
B:advantageously
C:adversely
D:profitably
答案: 【adversely】 点我阅读全文
1、 问题:Which of the following is not an indicator of the diversity of soil organisms ?
选项:
A:Species richness
B:Individual number
C:Biomass
D:Individual size
答案: 【Individual size】 点我阅读全文