在下列投资方案经济效果评价方法中，属于动态评价方法的有( )。 A．增量投资收益率

When Jane began to take swimming lessons, her main _____ was the fear of water.

A．evidence

B．crisis

C．obstacle

D．danger

—Do you think it's going to rain?

—_______.[ ]

A. Yes, I think it is

B. Yes, I think so

C. No, I don't think

D. I think it not

叶片呈长椭圆形，上面暗灰绿色，先端钝圆，全缘或微波状，基部蔓延至叶柄成翼状的药材是（）

A.罗布麻叶

B.枇杷叶

C.大青叶

D.番泻叶

E.侧柏叶

患者，男，35岁，过食油腻之品后，忽觉腹痛难忍，伴腹泻，里急后重，最宜用的药物是（）

A.陈皮

B.山楂

C.鸡内金

D.薤白

E.谷芽