Đề thi Olympic Tiếng Anh trên mạng bao giờ cũng khó, đòi hỏi các em không những nắm vững kiến thức trong sách giáo khoa mà còn phải biết tìm tòi, nghiên cứu các tài liệu tham khảo bên ngoài. Xuất phát từ thực tế đó, thư viện eLib giới thiệu bộ sưu tập Đề thi ViOlympic Tiếng Anh Lớp 12 - Đề thi số 78. Chúc các em đạt kết quả tốt trong kỳ thi Olympic Tiếng Anh trên mạng sắp tới.
Tóm tắt Đề thi ViOlympic Tiếng Anh Lớp 12 - Đề thi số 78
Dưới đây là đoạn tài liệu được trích trong BST Đề thi ViOlympic Tiếng Anh Lớp 12 - Đề thi số 78:
Đọc đoạn văn sau và trả lời các câu hỏi:
Cerro Prieto, twenty miles south of the United States border, is a large geothermal energy field likely to produce 1,000 megawatts of electricity annually by the early 1990's. This will be well above its initial' 1973 capacity of 75 megawatts, which was doubled in 5 1979, with a further 30 megawatts added two years later to bring it up to its present capacity. However, in addition to the primary purpose of producing electricity, scientists at Cerro Prieto have developed several other uses for the geothermal heat and fluid, including some in acquaculture and hydroponics. In relation to the former, 10 crayfish are raised in water kept at about 85F. They feed on the minute crustaceans and algae occurring naturally in the geothermal fluid while special strains of bacteria have been introduced to clean the water along with small local crayfish that absorb salts harmful to the commercial variety. This variety's metabolism is speeded up 15 by the controlled environment, which reduces growing time.
The salt-rich geothermal fluid also produces sticking results through the use of hydroponics, which yields of crops such as tomatoes and cucumbers as much as 300 per cent higher than in normal soil. Meanwhile, 20 a ten-meter-long enclosed shed produces half a ton of barley grass per day, the grass reaching a height of five inches in only seven days from seed.
1. Cerro Prieto is
(A) in the South of the United States.
(B) not very large.
(C) in a field.
(D) not in the United States.
2. What was the generating capacity of the Cerro Prieto field in 1980?
(A) 75 megawatts
(B) 105 megawatts
(C) 150 megawatts
(D) 180 megawatts
3. By how much was the field's capacity expected to expand between the time of writing and the early 1990's ?
(A) 820 megawatts
(B) 700 megawatts
(C) 250 megawatts
(D) 100 megawatts
4. The passage implies that
(A) the field's generating capacity doubles every six years.
(B) the field originally began producing in 1973.
(C) engineers had to look further afield to find another 30 megawatts.
(D) the latest addition to capacity was two years behind schedule.
5. According to the passage, which of the following is true ?
(A) The scientists have designed special food for the crayfish.
(B) Scientists at Cerro Prieto are more interested in hydroponics than in generating electricity.
(C) Commercial crayfish react badly to salts in the geothermal fluid.
(D) Crayfish feed on special types of bacteria.
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