随着生态演替的发展，正相互作用增加负相互作用减少。（ ）

【名词&注释】

相互作用(interaction)、火车站(railway station)

[判断题]随着生态演替的发展，正相互作用增加负相互作用减少。（ ）

查看答案&解析查看所有试题

学习资料：

[单选题]Mathew Brady______.

A. was very lifelike
B. was famous for his unusual pictures
C. was quite strong
D. took many pictures of moving people

[单选题]Not until I got to the railway station ______my ticket missing.

A. I did find
B. did I find
C. I found
D. had I found

[单选题]不开口于中鼻道的鼻旁窦是（ ）

A. 筛窦前群
B. 上颌窦
C. 筛窦后群
D. 额窦
E. 筛窦中群

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