杏苏散的功用是
A．清燥润肺B．轻宣温燥C．润肺益胃，降逆下气D．轻宣凉燥，理肺化痰E．益气滋阴，固肾止渴
参考答案：D
Don't touch anything in the room _____ the hostess tells you to. [ ]
A. if
B. though
C. unless
D. even though
期货套保方案应包括哪些内容？
