Who is smoking a French cigarette
A. [A] The woman.
B. The man.
C. A new person.
计算机打印输出的记账凭证.必须( )齐全。
A. 表格线
B.汉字输出
C. 凭证要素
D. 科目和科目代码
Some of the crops failed. ______, the cotton did pretty well.
A. [A] Then
Besides
C. Therefore
D. However
计算机病毒与正常程序的本质区别为( )。
A. 传染性
B. 破坏性
C. 潜伏性能
D. 衍生性