元好问把自己与白朴的关系比喻为唐代()的关系。
A.李白和杜甫
B.李商隐和杜牧
C.元稹和白居易
D.韩愈和柳宗元
参考答案:C
_________ the task , they have to stay there for another two weeks.
A.Not completing
B.Not completed
C.Not having completed
D.Having not completed
苦味药抗菌、抗炎、解热的主要成分是()
A.苷
B.生物碱
C.无机盐
D.有机酸
E.挥发油