阅读下面这篇短文，短文后有2项测试任务：(1)第23～26题要求从所给的6个选项中为规定段每段选择1个正确的小标题；(2)第27～30题要求从所给的6个选项中选择4个正确选项，分别完成每个句子。 Computer Security 1. As the
business sector, and indeed all of our society, becomes more dependent on
computers, concern about computer security grows. According to Business Week,
roughly $1 trillion is transferred every day via computer networks. Yet a
knowledgeable person can, with relative ease, access a computer system and cause
serious damage. Estimates of the annual cost of computer crime range from $ I
billion to $ 2 billion. 2. One of the most recent computer
problems firms face is called a "computer virus". A virus is a type of computer
program that is intentionally hidden in other computer programs. When a program
with a virus comes into contact with other programs, the virus attacks the other
programs. Some viruses can destroy every bit of information in a computer.
Businesses also fact the problem of losing highly confidential data to computer
hackers. These individuals break into computer systems and steal information or
damage programs. 3. Computer viruses and computer hackers
present a huge potential risk to firms. They have shut down entire computer
systems in some large companies. 4. Fortunately, business firms
can now obtain insurance coverage for losses from computer crime. Although some
policies specifically cover computer viruses, many others were drafted before
computer viruses became a problem. These policies generally insure all risks of
direct physical loss or damage, unless something is specifically excluded. The
issue then becomes whether or not the damage caused by a computer virus is a
physical loss. In some cases, insurance companies have maintained that
information lost on a computer is not physical property and thus is not covered
by a traditional all-risk policy. 5. Many insurance companies
are beginning to use policy language that deals specifically with the loss of
computer information. In this way, the insured understands what is covered, and
the insurance company can avoid a large, unexpected loss. Courts have held that
information stored on the computer is tangible (切实的) property in tax cases. In
property insurance cases, they may handle the destruction of computer
information the same way. Destruction of valuable information, therefore, could
result in a catastrophic loss that is covered under an all- risk policy unless
there is limiting language. A. Fatalness from viruses and hackers B.
Two primary dangerous factors: virus and hacker C. How the viruses and
hackers destroy our computers the loss of computer information D. Attitudes
towards E. The best way to protect our computers F. The policies about the
viruses Paragraph 3 ______.