[简答题]{{B}} HUMAN CLONING OR NOT {{/B}} In the first part of your writing you should present your thesis statement, and in the second part you should support the thesis statement with appropriate details. In the last part you should bring what you have written to a natural conclusion or a summary. Marks will be awarded for content, organisation, grammar and appropriateness. Failure to follow the above instructions may result in a loss of marks. Write your composition on ANSWER SHEET FOUR.

[单项选择]Speech is the （） ability possessed only by human beings.
A. unique
B. average
C. collective
D. single

[单项选择].More and 90 percent of the calcium in the human body is in the skeleton.

[单项选择]
{{B}}PASSAGE 1{{/B}}

Everyone must have had at least one personal experience with a computer error by this time. Bank balances are suddenly reported to have jumped from $379 into the millions, appeals for charitable contributions are mailed over and over to people with crazy sounding names at your address, department stores send the wrong bills, utility companies write that they’re turning everything off, that sort of thing. If you manage to get in touch with someone and complain, you then get instantaneously typed, guilty letters from the same computer, saying, "Our computer was in error, and an adjustment is being made in your account."
These are supposed to be the sheerest, blindest accidents. Mistakes are not believed to be the normal behavior of a good machine. If things go wrong, it must be a personal, human error, the result of fingering, tampering a button getting
A. making mistakes is confined only to human beings.
B. every human being cannot avoid making mistakes.
C. all human beings are always making mistakes.
D. every human being is born to make bad mistakes.

[填空题]Chimpanzee extinction may affect______

[填空题]human resources

[填空题] Viruses are human-made software programs 【B1】 specifically to wreak havoc on personal computers and networks. The 【B2】 of contracting one of these computer viruses over the Internet has increased dramatically. Typically, you get a virus by opening e-mail 【B3】 . Some viruses are relatively 【B4】 to individuals. They just 【B5】 themselves to 【B6】 messages or e-mail themselves to all the people listed in your address book. The sudden flood of email 【B7】 mail servers, causing the system to 【B8】 . Other viruses are more 【B9】 ,and may lie asleep until a certain date. Then they 【B10】 to life to do their dirty 【B11】 . Sometimes a strange message appears on your screen, or data and programs may be 【B12】 . In the worst case, all the contents of your hard drive may be 【B13】 out. These 【B14】 programs start on one computer, then replicate quickly, 【B15】 other computers around the world. In 1988, a student at Cornell University
A. A．harmful
B．harmless
C．attacked
D．deleted