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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-virus 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. ff 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
A. Because the newly published anti-virus software is more expensive.
B. Because the previous(先前的) anti-virus software cannot work any longer.
C. Because the inventors of viruses have suggested this idea.
D. Because computer viruses are always developing.

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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-virus 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. ff 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
A. Don’t rush to open any e-mail attachment.
B. Never open any e-mail attachment.
C. It’s always safe to open an e-mail attachment from a friend.
D. Whenever you receive an e-mail, you should make a call to make sure whom it come from.

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What was the man considering
A. Being employed by the two men.
B. Opening a branch in the center.
C. Passing their management to George and Jan

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[单项选择]Passage Four Despite the numerous warnings about extreme weather, rising sea levels and mass extinctions, one message seems to have got lost in the debate about the impact of climate change. A warmer world won’t just be inconvenient. Huge swathes (片) of it, including most of Europe, the US and Australia as well as all of Africa and China will actually be uninhabitable--- too hot, dry or stormy to sustain a human population. This is no mirage. It could materialize if the world warms by an average of just 4°C, which some models predict could happen as soon as 2050. This is the world our children and grandchildren are going to have to live in. So what are we going to do about it One option is to start planning to move the at-risk human population to parts of the world where it will still be cool and wet. It might seem like a drastic move, but this thought experiment is not about scaremongering (危言耸听). Every scenario is extrapolated from predictions of the latest climate models, and som
A. the likelihood of climate change making life inconvenient
B. the warning against worsening climate change
C. the inevitable consequence of global warming
D. the misconception of a warmer world

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[简答题]Regardless of repeated warnings from his friends，________________ (把所有的钱都投向了高风险商业).

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[填空题]Before considering this question it is interesting to review briefly the evolution of (1) ______
the mind as the instrument. The commonest way that has been used to find out the
relative intellectual level of creatures at different stage of evolutionary complexity has (2) ______
been to study the way they behave when giving different kinds of puzzles. For example, (3) ______
an ant possesses a complex routine of behaviour, but can it think The answer is what (4) ______
if an ant is forced to go through a maze of passages, many of which are dead ends,
on its way to its nestle, it starts by making a lot of mistakes and taking a great many (5) ______
wrong turnings. In the end, however, after it has to worry its way through often (6) ______
enough, it does learn to get to its nest without going into any of the blind alleys.
As one moves up the evolutionary scale the test of mind-power exemplified by solving (7) ______
the problem of getting through a

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