在80286的标志寄存器中增加了( )个标志位字段。
A．1
B．2
C．3
D．4
参考答案：B
—How is the boy?
—Sorry.He__________though the doctor made every effort to save him.
A．died
B．was dead
C．had died
D．has been dead
我喜欢不时地夸耀一下自己取得的成就。
A．是
B．否
