葶苈大枣泻肺汤的适应证是（）
A.卒呕吐，心下痞，眩悸者
B.支饮不得息
C.两者均是
D.两者均不是
参考答案：B
—Does your uncle still smoke?
—He given it up. It’s two years ever since he .
A．can’t have; smoked
B．may have; smoked
C．should have; has smoked
D．should have; didn’t smoke
如图，斜面上放木块A，请画出A的重力和斜面对A的支持力的示意图.
