—Accident?
—No, I haven't. Tell me about _____. [ ]
A. it
B. her
C. him
D. them
答案:A
委托B卷烟厂加工的烟丝的组成计税价格为( )万元。
A.15
B.21.43
C.18.57
D.14.29
计算机的主频周期是指( )
A.时钟周期B.指令周期C.CPU周期D.存取周期