股票期权的强制持有期一般为( )。
A.1-2年
B.2-3年
C.3-5年
D.5-10年
参考答案:C
— What a clean and bright classroom, isn't it?
— Yes, it's always clean and bright because it _____every day.
A. cleans
B. cleaned
C. is cleaned
D. was cleaned
下述文化传播媒介属于书面语言媒介的是()
A.演讲
B.谈判决议
C.目光
D.鼓掌