In the last few years thousands of films ________all over the word.(2011·天津)

A．have produced

B．have been produced

C．are producing

D．are being produced

夏季砌筑用砖要（）处理。

A、在水中浸泡一天

B、存放在正式房屋内

C、充分浇水润湿

D、干砖、湿砖亦可