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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