功能祛风湿,通经络,消骨鲠的药物是()。
A.独活
B.威灵仙
C.川乌
D.蕲蛇
E.木瓜
参考答案:B
Can you think of a _____ in which you could use this expression.
A.situation
B.condition
C.state
D.matter
无差异曲线向上弯曲的程度大,投资者承受风险的能力越弱。( )