5. Tom’s very good at science when his brother is absolutely hopeless .
a b c d
PART THREE : READING COMPREHENSION
A. Read the following passage. Choose the best answer from a, b, c or d .
With increasing development and use of computer technology, there is a new disease to worry about .
Computer “viruses “ programs designed to sabotage computers, are infecting computers in corporation
homes and universities. These viruses spread exponentially , much like biological contagion , and then
disrupt the affected systems. The virus secretly attaches itself to alter files. The damage is generally activated
by using the computer’s clock . Then , any program executed may be exposed to the virus including program
spread through telephone connections. Because of the increasing incidents of virus infiltration , businesses
and agencies are becoming wary of sharing soft wares . Security policies need to be increased as immunity
programs are being developed .
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