____ excited all Chinese and even all Asians most in the Athens 2004 Olympics was ____Liu Xiang won the gold medal of the men's 110m hurdles by clocking 12.91 seconds to equal the world record.

A．What; which

B．What; that

C．Which; what

D．Which; that

设有定义int i=123；long j=456；，下列赋值不正确的是（ ）。

A． j=i；

B． j=(long)i;

C． i=(int)j；

D． i=j；