复脉汤中用量最大的药物是（）
A.生地黄
B.炙甘草
C.大枣
D.阿胶
E.桂枝
参考答案：A
He visited the Effel Tower, which _____ to 1889, during his stay in France last summer. [ ]
A. dated back
B. dates back
C. has dated back
D. has been dated back
– Can you tell me ___________?
– An engineer from Jinan Iron and Steel Plants.
A．what your friend is
B．who your friend is
C．what is your friend
D．who is your friend
