举一反三
- All you have to do ___ to protect environment. A: have to B: are C: is D: to
- A computer virus is a program that can cause an ______________.
- Do you have any difficulty ______ (design) this new computer program
- You want to ( ) maybe wake up a virus that has residented in memory. A: delete a file B: execute a program C: copy a file D: access a diskette
- Once you enroll in the program, we offer you support for six months, during which you should have completed all courses.
内容
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Professor Smith is also the _______ of the international program office. If you have any problem when you study here， you may go to him for help.
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（）is the first line of protect between your computer and the public Internet. A: The Internet protocol B: The firewall C: The anti-virus software D: The intrusion-detection systems
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Passage One Questions 26 to 28 are based on the passage you have just heard. A: A recreational program. B. An educational program. B: C. A program for cartoons. D. A program for commercials.
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中国大学MOOC: Tear ducts (泪腺) operate on a normal basis to and protect the eye. When you have an emotion, they overact and create tears. (lubrication)
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The most important program on any computer is. A: Operating System B: Virus C: software D: Office 2000