百日咳临床过程可分3期()
A.卡他期、痉咳期、恢复期
B.潜伏期、发热期、痉咳期
C.发热期、痉咳期、恢复期
D.潜伏期、发热期、痉咳恢复期
E.潜伏期、痉咳期、恢复期
参考答案:A
--What do you want to do next?We have half an hour until the baseball game.
---_____.Whatever you want to do is fine with me.
A.It just depends
B.It’s up to you
C.All right
D.Glad to hear that
土壤风化过程有哪些类型?各类型风化过程如何?