Read the text. Then choose the correct answer to questions 30-32


) Government salaries were frozen



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) Government salaries were frozen.
15. Which of the following statements in Not correct? 
a) The economy of Iraq was not affected as much as that of 
Libya due to the sanctions. 
b) Libyan population did not pay any money for the water 
and electricity they used before the late 1980's. 
c) The national income of Libya was mainly from the oil 
between 1970 and 1980. 
d) Only the people working for the government benefited 
from the national revenue between 1970 and 1980. 
The common cold is a mild, contagious virus infection of the upper respiratory tract (nose, 
throat and larynx). The common cold is most prevalent during the winter. It is estimated that 
about 50% of all people acquire colds during the winter, while only about 20% are infected 
during the summer. The disease is also more prevalent among certain age groups. Pre-school 
children average from 6 to 12 colds a year, while their parents have about 6 colds a year. Other 


136 
adults average only 2 or 3 a year. The principal cause of the common cold is a group of 50 to 60 
different viruses known as rhinoviruses. In addition to rhinoviruses, which seem to account for 
the majority of common colds, certain other viruses have also been associated with the disease. 
Since so many viruses cause the common cold, it is unlikely that artificial immunization, that is 
any medication to prevent it, will be probable for some time. A natural form of immunity does 
exist; but an individual must be infected with all of the many cold-producing viruses before he 
is truly immune to the disease. Evidence of natural immunity is the fact that colds occur less 
frequently in older persons. This is the result of immunity acquired from cold infections in the 
past. It also reflects their lessened contact with small children, a major source of infection. 
16. The common cold is more usually seen in................
a) people who are artificially immunized 
b) people who become naturally immune to disease 
c) parents with small children 

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