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Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct
word for each of the blanks from 41 to 50.
Mobile phones emit microwave radio emissions. Researchers are questioning whether exposure to these
radio waves might (41) to brain cancer. So far, the data are not conclusive. The scientific evidence
does not (42) us to say with certainty that mobile phones are categorically (43) . On the other
hand, current research has not yet (44) clear adverse effect associated with the prolonged use of
mobile phones.
Numerous studies are now going (45) in various countries. Some of the results are contradictory
but others have shown an association between mobile phone use and cancer. (46) , these studies are
preliminary and the issue needs further, long - term investigation.
(47) the scientific data is more definite, it is prudent for people to try not to use mobile phone for
long (48) of time. Don't think that hands free phones are any safer either. At the moment, research
is in fact showing the (49) and they may be just as dangerous. It is also thought that young people
(50) bodies are still growing may be at particular risk.
Question 41: A. bring B. lead C. produce D. cause
Question 42: A. enable B. able C. let D. make
Question 43: A. unhealthy B. secure C. safe D. risky
Question 44: A. created B. demonstrated C. proved D. caused
Question 45: A. by B. on C. through D. about
Question 46: A. While B. Additionally C. However D. Though
Question 47: A. Until B. Provide C. When D. As
Question 48: A. quantities B. amounts C. periods D. intervals
Question 49: A. fact B. truth C. way D. opposite
Question 50: A. with B. that C. whose D. as
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the
correct answer to each of the questions from 51 to 60.
The development of genetically modified (GM) plants and animals had led to a huge global
controversy. Opponents say that GM “Frankenfoods” are a threat to our well-being, and proponents say
that the risks are minimal. There is one aspect of the war over GM that is often overlooked. Anyone who
wears a cotton shirt these days is using a GM crop. Cotton is the only major non-food GM crop at present,
but others are coming.
GM cotton plants that is not food has not stopped the most passionate GM opponents from
objecting. If GM cotton is grown in a field next to fields of non-GM cotton, they argue, then how to keep
genes from being transferred from field to field. This danger, however, is not as compelling to the public
as possible health hazards in food, so there is no great fury over GM cotton.
GM cotton seeds produce higher yields, and they do without the need for pesticides. Planting of
GM cotton has increased fivefold since 1997; three-quarter of cotton in America, and over half in China,
is now GM. Farmers like it because it increases their profits.
Other options for non-food GM include new variety of flowers with different colors or scents,
tougher grasses for lawns, and plants designed to soak up pollutants from the soil. The paper industry
provides another example of potential for GM to help produce better and cheaper products. Paper is made
from pulp, and pulp is generally made from trees. Researchers in New Zealand and Chile have been
working on insect-resistant pines, and a Japanese firm has combined carrot genes with tree genes to make
them grow better in poor soil.
Another interesting case is that of tobacco. It is not food crop, but it is consumed, and GM tobacco
plants with both more and less nicotine have been created. The tobacco plant, however, is an ideal target
for GM, since its genetics are very well understood and it produces a lot of leaves. The value of the drugs
that could be produced by GM tobacco is so high, many farmers could switch from growing tobacco for
cigarettes to growing it for medicine. Since medical cost is rising, consumers would also be happy to use
drugs produced in bulk by GM tobacco.
Question 51 : Why does the author mention a cotton shirt in paragraph 1?