Câu hỏi:
18/08/2021 201Read 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 following questions.
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.
A useful theory, in addition to explaining past observations, helps to predict events that have not as yet been observed. 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 Henri 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
The word "this" in line 3 refers to ______.
Đáp án chính xác
Câu hỏi trong đề:
Bộ đề thi Tiếng anh THPT Quốc gia năm 2022 có lời giải (30 đề) !!
Sách mới 2k7: Tổng ôn Toán, Lí, Hóa, Văn, Sử, Địa…. kỳ thi tốt nghiệp THPT Quốc gia 2025, đánh giá năng lực (chỉ từ 110k).
Quảng cáo
Trả lời:
Giải bởi Vietjack
Kiến thức: Đọc hiểu – từ thay thế
Giải thích:
Từ “this” trong dòng 3 đề cập đến ______.
- thuyết phân tử động học B. một sự kiện được quan sát
- một mô hình tưởng tượng D. một ví dụ tốt
Thông tin: 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.
Tạm dịch: Một lý thuyết thường liên quan đến một mô hình tưởng tượng giúp các nhà khoa học hình dung ra cách một sự kiện quan sát được có thể được tạo ra. Một ví dụ điển hình về điều này được tìm thấy trong lý thuyết phân tử động học, trong đó các chất khí được hình dung là được tạo thành từ nhiều hạt nhỏ chuyển động không đổi.
Chọn C
Nhà sách VIETJACK:
CÂU HỎI HOT CÙNG CHỦ ĐỀ
Câu 1:
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions
_______ a scholarship, I entered the frightening and unknown territory of private education
Xem đáp án »
18/08/2021
9,478
Câu 2:
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
Capital punishment aims to hinder people from committing such crimes.
Xem đáp án »
18/08/2021
3,099
Câu 3:
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
The building contractor wants this work to be finished soon. We have been working to a strict deadline
Xem đáp án »
18/08/2021
2,871
Câu 4:
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
Tim read articles about the company very carefully. He then was able to answer all interview questions
Xem đáp án »
18/08/2021
2,851
Câu 5:
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
Much as George loved travelling in Asia, he decided not to go to Indonesia because of his fears of terrorism
Xem đáp án »
18/08/2021
2,685
Câu 6:
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions
It must be true. I heard it straight from the _______ mouth
Xem đáp án »
18/08/2021
2,432
Câu 7:
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions
Some officials proposed to increase the _______ on tabacco
Xem đáp án »
18/08/2021
2,089
về câu hỏi!