单选题WASHINGTON -- considering the serious warnings lately about Internet viruses (病毒), users may don't use their machines just to keep them safe. In reality, common sense and a few basic tips can keep Internet surfers secure.Anti-vires software is a must, and it should be updated at least once a week to recognize newly viruses. If this is not done, you will meet great troubles. People with broadband Internet connections should have also a firewall, These protect the computer from attacks by hackers (黑客). Then it is time to think about computer habits. Unlike old viruses, which spread only through shared disks, the Internet brings viruses straight to the e-mail box. If an e-mail with attachment (附件) comes from an unknown sender, or unexpectedly from a known sender, it should not be opened. On receiving an unexpected attachment from a friend, experts suggest a telephone call to make sure of the mail's source before opening. If you open the mail without any consideration, you will be easily attacked by the hackers.

单选题If you are in another person's home and want to smoke, what should you do?

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单选题Have you heard the news, ______ Billy will come back from Denmark soon. A. which B. where C. that D. what

单选题8:30 p. m. Outlook Outlook is back with a new series of reports to keep you update with all that's new in the world of entertainment. Stories go all the way from the technical to the romantic, from stage to screen. There will be reports of the stars of the moment, the stars of the future and the stars of the past. The director with his new film, the designer with the latest fashion, and the musician with the popular song are part of the new Outlook. The program is introduced by Fran Levine. 9:00 p.m. Discovery When a 10-year-old boy gets a fast dam degree in mathematics or an 8-year-old child plays chess like a grand master, they are considered as geniuses. Where does the quality of genius come from? Is it all in the genes (基因) or can any child be turned into a genius7 And if parents do have a child who might become a genius in the future, what should they do? In this 30-minute film, Jonny Walt, the professor at School of Medicine, New York University will help you discover the answer. 10:00 p. m. Science/Health Is it possible to beat high blood pressure without drugs? The answer is "yes", according to the researchers at Tom Smith and three other medical centers. After a study of 800 persons with high blood pressure, they found that after 6 months, those devoted to weight loss--exercise and eating a low-salt, low-fat food--lost about 13 pounds and became fitter. Plus, 35% of them dropped into the "normal" category (范畴). This week, Dr. John White will tell you how these people reduce their blood pressure to a level similar to what's been achieved with Hypertension drugs.

单选题Wheredoesthisconversationtakeplace?A.Intheschool.B.AtLynn'shome.C.inthesupermarket.

单选题______ I can see, the two wheels which are supposed to turn round do not turn atound.

单选题 听下面5段对话或独白。每段对话或独白后有几个小题，从题中所给的[A]、[B]、[C]三个选项中选出最佳选项，并标在试卷的相应位置。听每段对话或独白前，你将有5秒钟的时间阅读各个小题；听完后，各小题将给出5秒钟的作答时间。每段对话或独白读两遍。

单选题WhywasSallyunhappy?

单选题{{B}}C{{/B}} In the past 200 years, Australia has lost 19 species (种类) of animals and 76 species of plants. The Australian National Parks and Wildlife Service estimates that between 100 and 250 million species of animals and plants have lived on Earth since life began about 3.5 million years ago. Today, there are between 5 and 10 million species, of which up to 1 million or more species could be extinct (灭绝) by the year 2010. Today the council of state and federal ministers responsible for nature conservation (保护) has produced a list of currently endangered vertebrate fauna (脊椎动物). Three species of whale, various birds, a number of frogs, snakes and fish are also on the list. But there is some cause for optimism (乐观). Several species previously believed extinct have reappeared in recent years. This could mean that other "extinct" species may yet surface--even the Tasmanian tiger, which some authorities believe still exists in the remote regions of Tasmania.

单选题It was quite a long time______I recognized him.

单选题If you spend ______ time with a baby long enough, you'll get ______ feeling for how the baby is feeling.

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单选题To get into the habit of smoking means ______ one's own life short.

单选题An important factor in a game of imperfect information is ______.

单选题It was John______she sent these postcards.

单选题They paid ______ money for the machine than I expected.

单选题______ , so Betty stopped to be a servant.