Task 2. Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer
Task 2. 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 8 – 15.
In Science, a theory is a reasonable explanation of observed events that are related. A theory often involves an imaginary model that helps scientists picture the way an observed event could be produced. A good example of this is found in the kinetic molecular theory, in which gases are pictured as being made up of many small particles that are in constant motion.
After a theory has been publicized, scientists design experiments to test the theory. If observations confirm the scientists’ predictions, the theory is supported. If observations do not confirm the predictions, the scientists must search further. There may be a fault in the experiment, or the theory may have to be revised or rejected.
Science involves imagination and creative thinking as well as collecting information and performing experiments. Facts by themselves are not science. As the mathematician Jules Poincare said: "Science is built with facts just as a house is built with bricks, but a collection of facts cannot be called science any more than a pile of bricks can be called a house."
Most scientists start an investigation by finding out what other scientists have learned about a particular problem. After known facts have been gathered, the scientist comes to the part of the investigation that requires considerable imagination. Possible solutions to the problem are formulated. These possible solutions are called hypotheses. In a way, any hypothesis is a leap into the unknown. It extends the scientist's thinking beyond the known facts. The scientist plans experiments, performs calculations, and makes observations to test hypotheses. For without hypotheses, further investigation lacks purpose and direction. When hypotheses are confirmed, they are incorporated into theories.
Trả lời cho các câu 1, 2, 3, 4, 5, 6, 7, 8 dưới đây:
Which of the following is the main subject of the passage?
Đáp án đúng là: D
Đáp án cần chọn là: D
The word "related" in paragraph 1 is closest in meaning to .
Đáp án đúng là: C
Đáp án cần chọn là: C
According to the second paragraph, a useful theory is one that helps scientists to .
Đáp án đúng là: C
Đáp án cần chọn là: C
The word "supported" in paragraph 2 is closest in meaning to .
Đáp án đúng là: A
Đáp án cần chọn là: A
“Bricks” are mentioned in paragraph 3 to indicate how .
Đáp án đúng là: A
Đáp án cần chọn là: A
In the fourth paragraph, the author implies that imagination is most important to scientists when they .
Đáp án đúng là: A
Đáp án cần chọn là: A
In the last paragraph, what does the author imply is a major function of hypotheses?
Đáp án đúng là: C
Đáp án cần chọn là: C
Which of the following statements is supported by the passage?
Đáp án đúng là: C
Đáp án cần chọn là: C
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