中国历史上有记载的第一个外科名医是：
A．医竘
B．华佗
C．医旬
D．危亦林
E．陈司成
参考答案：A
--I'd like to go with you, I'm very busy.
--It doesn't matter this time. [ ]
A. anyway
B. but
C. however
I'm very ________ after walking on the farm, so I go to bed early.
[ ]
A. sad
B. tired
C. boring
D. excited
