70. You can be happy if your surgeon can operate because it means ___________
A. he thinks your condition may be curable B. he is s good doctor
C. he knows you will survive D. you are getting better already
Read the following passage and mark A, B, C or D on your answer sheet to indicate the correct answer to
each of the questions
PANDEMIC DISEASES
Diseases are a natural part of life on earth. If there were no diseases, the population would grow too
quickly, and there would not be enough food or other resources. so in a way, diseases are natural’s way of
keeping the Earth in balance. But sometimes they spread very quickly and kill large numbers of people. For
example, in 1918, an outbreak of the flu spread across the world, killing over 25 million people only six moths.
Such terrible outbreaks of a disease are called pandemics.
Pandemics happen when a disease changes in a way that our bodies are not prepared to fight. in 1918, a
new type of flu virus appeared. Or bodies had no way to fight this new flu virus, and so it spread very quickly
and killed large numbers of people. While there have been many different pandemic diseases throughout
history, all of them have a new things in common.
First, all pandemic diseases spread from one person to another very easily.
Second, while they may kill many people, they generally do not kill people very quickly. A good
example of this would be the Marburg virus. The Marburg virus is an extremely infectious disease. In addition,
it is deadly. About 70 -80% of all people who get the Marburg virus died from the disease. However, the
Marburg virus has not become a pandemic because most people die within three days of getting the disease.
This means that the virus does not have enough time to spread a large number of people. The flu virus of 1918,
on the other hand, generally took about a week to ten days to kill its victims, so it had more time to spread.
While we may never be able to completely stop pandemics, we can make them less common. Doctors
carefully monitor new diseases that they fear could become pandemics. For example, in 2002, and 2003,
doctors carefully watched SARS. Their health warnings may have prevented SARS from becoming a
pandemic.
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