Which of the following best expresses the main idea of the passage
A. It is optical fibers and lasers that have made the information superhighway possible.
B. People can communicate with each other more quickly now on the Internet.
C. It has taken quite a long time for the Internet to come into existence.
D. If one is seriously ill, he can always get help via the modem communication system.
查看答案
本手术术后有效率一般为
A. 70%～80%
B. 80%～85%
C. 85%～90%
D. 90%～95%
E. 95%～100%
在设计阶段中，设计人员把经评审通过的各项需求转换成一个相应的体系结构，该体系结构是指______。
A. 数据体系结构
B. 系统体系结构
C. 软件体系结构
D. 以上全部
当对发现的缺陷进行修改之后，执行一系列基准测试，以确认程序的修改没有对程序的其他部分产生干扰，这种测试通常称为______。
A. 验证测试
B. 回归测试
C. 系统测试
D. 确认测试
The first two paragraphs tell us a true story of ______.
A. international cooperation via the Internet
B. how dangerous thallium can be to humans
C. how one can get help from the Internet
D. the girl’s recovery from thallium poisoning
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