— Do you think that the 11th Chinese National Games were a success ?  

— Yes, ___! It couldn't be ____ .  [ ]

A. relatively ; better  

B. approximately ; worse   

C. absolutely ; better  

D. fortunately ; worse

在TN-C-S系统中，下列要求符合规范的是（）。

A.PEN线不宜接入开关设备

B.PEN线不宜接入熔断器

C.PEN线不得接入任何开关设备

D.若需要在PEN线上装设电器时，只可相应断开相线回路