题目内容

When she graduates from the university this summer, Mary ________ here for four years.

A. will be studying
B. will have studied
C. will study
D. studies

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软件的生命周期包括计划阶段、________。

A. 开发阶段与测试阶段
B. 研究阶段与使用阶段
C. 开发阶段与运行阶段
D. 运行阶段与维护阶段

Now this businessman seems to be unable to pay（）the money borrowed from the bank.

A. in
B. for
C. off
D. out

As it turned out to be a small house party, we ________ so formally.

A. needn't dress up
B. did not have dressed up
C. did not need dress up
D. needn't have dressed up

对网络的威胁包括_。 Ⅰ．假冒 Ⅱ．特洛伊木马 Ⅲ旁路控制 Ⅳ．陷门 Ⅴ．授权侵犯在这些威胁中，属于渗入威胁的是_。

A. Ⅰ、Ⅲ和Ⅴ
B. Ⅲ和Ⅳ
C. Ⅱ和Ⅳ
D. Ⅰ、Ⅱ、Ⅲ和Ⅳ