两种离子的被吸着能力差异越大,则在交换柱中的分层也越()。
A、不明显
B、明显
参考答案:B
交际运用
A: Many new animals(动物园) are in the zoo(动物园). Do you know?
B: Oh? ___小题1:___
A: Pandas(熊猫), lions(狮子), monkeys, giraffes and dolphins.
B: Let’s go and see them.
A: OK. _____小题2:______
B: I want to see pandas first.
A: ____小题3:____
B: Because they are very cute. ___小题4:____
A: I like dolphins.
B: ___小题5:_____
A: Because they are clever and cute.
古代主张“制天命而用之”,即掌握自然的变化规律而利用它造福人类的思想家是()。
A.荀子
B.王充
C.范缜
D.王夫之