—What ________ did the country leave you after a year of your staying there?

—Well, I think what ________ me most was the friendliness of the people there. [ ] 

A. impression; impressed

B. was impressed; impressed

C. was impressed on; impressing

D. had impressed; was impressed

VBA“定时”操作中，需要创建窗体的“计时器间隔(TiemrInterval)”属性值。其计量单位是

A．微秒

B．毫秒

C．秒

D．分钟