Câu 30: None of her novels lends itself to being made into a film; they just simply lack a coherent
storyline.
A. inapplicable B. untamable C. inconceivable D. unsuitable
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 31 to 35.
Genetic modification of foods is not a new practice. It has been practiced for thousands of years under
the name of "selective breeding". Animals and plants were chosen because they had traits that humans
found useful. Some animals were larger and stronger than others, or they yielded more food, or they had
some other trait that humans valued. Therefore, they were bred because of those traits. Individuals with
those traits were brought together and allowed to breed in the hope that their offspring would have the
same traits in greater measure.
Much the same thing was done with plants. To produce bigger or sweeter fruit, or grow more grain per
unit of land, strains of plants were combined and recombined to produce hybrids, or crossbreeds that had
the desired traits in the right combinations. All the while, however, biologists wondered: is there a more
direct and versatile way to change the traits of plants and animals? Could we rewrite, so to speak, the
heredity of organisms to make them serve our needs better?
In the 20th century, genetic modification made such changes possible at last. Now, it was possible to
alter the genetic code without using the slow and uncertain process of selective breeding. It even became
possible to blend plants and animals genetically: to insert animal genes into plants, for example, in order
to give the plants a certain trait they ordinarily would lack, such as resistance to freezing. The result was a
tremendous potential to change the very nature of biology.
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