—Granny, you look so weak. What's wrong with you?

—Terrible. The factory made ______ noise. It was _____ noisy that I couldn't sleep well last night. [ ]

A. too much, so

B. much too, so

C. too much, too

D. many, much

动态增强扫描的方法是静脉注射对比剂后（）

A．做螺矩为1的螺旋扫描 

B．动态观察对比剂排入肾盂输尿管过程的扫描 

C．快速移床快速扫描 

D．在感兴趣区同一层面在一定时间范围内重复扫描 

E．在感兴趣层面内注射造影剂前后对比扫描