药材五加皮的气味是（）
A.气微，味微甘
B.气芳香，味苦而涩
C.气微香，味微辣而苦
D.气微，味苦
E.气香，味极苦
参考答案：C
对于承包商来说，下列合同中风险最小的是（）合同。
A．可调总价
B．可调单价
C．成本加奖罚
D．成本加奖励
31. A warm thought suddenly came to me _______ I might use the pocket money to buy some flowers for my mother’s birthday.
A．if
B．when
C．that
D．which
