上海证券交易所和深圳证券交易所的组织形式都属于（）。
A.公司制
B.会员制
C.合同制
D.承包制
参考答案：B
旋覆代赭汤的功效是
A．降气平喘、祛痰止咳B．宣肺降气、祛痰平喘C．降逆化痰、益气和胃D．降逆和胃、益气清热E．温中益气、降逆止呕
I （）to go for a walk, but someone called and I couldn't get away.
A. was planning
B. planned
C. had planned
D. would plan
