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The word "This" in paragraph 3 refers to____________

Câu hỏi: 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 35 to 48.
What picture do you have of the future? Will life in the future be better, worse or the same as now? What do you hope about the future?
Futurologists predict that life will probably be very different in 2050 in all the fields, from entertainment to technology. First of all, it seems that TV channels will have disappeared. Instead, people will choose a program from a 'menu' and a computer will send the program directly to the television. Today, we can use the World Wide Web to read newspaper stories and see pictures on a computer thousands of kilometers away. By 2050, music, films, programs, newspapers and books will come to us by computer.
In what concerns the environment, water will have become one of our most serious problems. In many places, agriculture is changing and farmers are growing fruit and vegetables to export. This uses a lot of water. Demand for water will increase ten times between now and 2050 and there could be serious shortages. Some futurologists predict that water could be the cause of war if we don't act now.
In transport, cars running on new, clean fuels will have computers to control the speed and there won't be any accidents. Today, many cars have computers that tell drivers exactly where they are. By 2050, the computer will control the car and drive it to your destination. On the other hand, space planes will take people halfway around the world in two hours. Nowadays, the United States Shuttle can go into space and land on Earth again. By 2050, space planes will fly all over the world and people will fly from Los Angeles to Tokyo in just two hours.
In the domain of technology, robots will have replaced people in factories. Many factories already use robots. Big companies prefer robots - they do not ask for pay rises or go on strike, and they work 24 hours a day. By 2050, we will see robots everywhere - in factories, schools, offices, hospitals, shops and homes.
Last but not least, medicine technology will have conquered many diseases. Today, there are electronic devices that connect directly to the brain to help people hear. By 2050, we will be able to help blind and deaf people see and hear again. Scientists have discovered how to control genes. They have already produced clones of animals. By 2050, scientists will be able to produce clones of people and decide how they look, how they behave and how much intelligence they have.
The word "This" in paragraph 3 refers to____________
A. the possible war.
B. the cash crop planting.
C. the serious shortage
D. the demand for water.
Đáp án B: the cash crop planting
Kiến thức kiểm tra: Tham chiếu đại từ
Giải thích chi tiết:
Từ "this" ở đoạn 3 thay thế cho____________
A. chiến tranh có thể xảy ra
B. việc trồng hoa màu để thu hoạch bán
C. sự thiếu hụt nghiêm trọng
D. nhu cầu nước
Dẫn chứng: "In many places, agriculture is changing and farmers are growing fruit and vegetables to export. This uses a lot of water."
Dịch nghĩa: "Ở rất nhiều nơi, nông nghiệp đang thay đổi và những người nông dân đang trồng hoa quả và rau củ để xuất khẩu. Điều này cần rất nhiều nước"
Vậy từ "this" thay thế cho "growing fruit and vegetables" = "cash crop planting".
Đáp án B.
 

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