“雷声大，雨点小”、“三分钟热情”是批评一个人 （     ） 

A．做事情不果断

B．做事情缺乏自信

C．做事情不能持之以恒

D．做事情没有目标

Some old buildings _______ and a new stadium for Nanjing 2014 Youth Olympic Games is being built right there.

A．will be pulled down

B．have been pulled down

C．are pulled down

D．had been pulled down