中国传统农业社会人口流动的主要特征是( )
A:早出晚归
B:安土重迁
C:季节性迁移
D:逐水而迁
学习了生物圈是所有生物的家后,判断下列说法不正确的是( )
根据对话内容,选择适当的选项补全对话,使对话完整。
A. She is a doctor. B. Yes. I have one aunt.
C. Good afternoon. D. Is this your aunt?
A: ____
B: Good afternoon.
A:____
B: No, this is my mother.
A: What does she do?
B:____
A: Do you have any aunts?
B:____ She is a nurse.