A:
B:
C:
D:
把下面动物行为与行为类型联系起来。
先天性行为____
学习行为____
社会行为____
With the quality-oriented education (素质教育) being carried out, teachers won't too much importance to students' grades.
一个圆柱的俯视图是 ____,左视图是 ____.