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cause the disease in themselves, into 20
volunteers, following successful tests on animals.
The volunteers' immune systems were found to be as good as those of
people who have naturally
contracted the infection through a mosquito bite and recovered.
112- The passage states that scientists……… .
A)have just been successful in finding an effective vaccine against malaria
B)illegally carried out tests on more than 500
people
C)forced people to take part in their experiment to find a cure for malaria
D)have been looking for a way to protect people from malaria for over
two decades
E)have so far found approximately one million volunteers to take part in their tests
113-The passage gives us the information that malaria ……. .
A)is fatal for more than 500
million people per year
B)mostly affects aged people who live in Africa
C)will soon be eliminated from the
Earth due to this discovery
D)has spread to the rest of the world from Africa
E)is a disease
transmitted by mosquitoes
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