止血药中有小毒的药物是（）
A.三七
B.蒲黄
C.花蕊石
D.艾叶
E.檵木
参考答案：D
-Look at those clouds!
-Don't worry. ______ it rains, we'll still have a great time.
A．Even if
B．As though
C．In case
D．If only
预期收入理论认为，只要未来收入有保障，长期信贷和消费信贷就能保持流动性和安全性。( )
