- B
- A
- B
- C
（比较题）
- (1).甲虫类害虫为
- (2).凡趋向刺激物的反应
- (3).凡背向刺激物运动的反应
- (4).害虫在外界条件刺激下引起运动的反应
A正趋性
B负趋性
C两者均是
D两者均不是
正确答案
答案解析
略
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