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 30 to 34.
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.
The word "them" in paragraph 2 refers to ______.
A. organisms
B. traits
C. animals
D. plants
Từ “them” trong đoạn 2 liên hệ với ______.
A. organisms (n): các sinh vật
B. traits (n): đặc điểm (=features, characteristics)
C. animals (n): động vật
D. plants (n): thực vật
Thông tin: Could we rewrite, so to speak, the heredity of organisms to make them serve our needs better?
Tạm dịch: Chúng ta có thể viết lại, theo một cách nào đó, tính di truyền của các sinh vật để làm cho chúng phục vụ nhu cầu của chúng ta tốt hơn?
Chọn A
Mark the letter A, B, C, or D on your answer sheet to indicate the most suitable response to complete each of the following exchanges
Two friends, Peter and Linda, are talking about pets.
- Peter: “Well, cats are very good at catching mice around the house”
- Linda: “___________________”
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions
Betty knows she needs exercise, but finds going to the gym a ______.
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions
The last time Jimmy ______ a training course was when he was an undergraduate.
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions
Martin was behind all the brilliant marketing schemes – he is really the ______ of the company.
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions
The workers hope there will be a peaceful ______ to the new system.
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions
With very high price of oil, people have to ______ on petrol.
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions
His speech _______ little or no relation to the topic given.
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions
______, no one was absent from the farewell party last night.
Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
Psychological experiment is indicated that people remember more math problems that they can’t solve than those they are able to solve.
Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
When a country in an early stage of development, investments in fixed capital are vital.
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions
Why are you always so jealous _______ other people?
Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions
It was not until after I got home that I realized that I had not set the burglar alarm in the office.
Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions
Societies doubted about women’s intellectual ability. Therefore, they could not get access to education
Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions
"You did not tell the truth, Lucy!" said Nick.
Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions.
When the Titanic crashed into the iceberg, the crew quickly sent out distress signals to alert nearby ships of the disaster and request their help.