Câu hỏi:
18/04/2020 1,303Read 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 36 to 42.
The invention of the incandescent light bulb by Thomas A. Edison in 1879 created a demand for a cheap, readily available fuel with which to generate large amounts of electric power. Coal seemed to fit the bill, and it fueled the earliest power stations (which were set up at the end Of the nineteenth century by Edison himself). As more power plants were constructed throughout the country, the reliance on coal increased. Since the First World War, coal-fired power plants have accounted for about half of the electricity produced in the United States each year. In 1986 such plants had a combined generating capacity of 289,000 megawatts and consumed 33 percent of the nearly 900 million tons of coal mined in the country that year. Given the uncertainty in the future growth of nuclear power and in the supply of oil and natural gas, coal-fired power plants could well provide up to 70 percent of the electric power in the United States by the end of the century.
Yet, in spite of the fact that coal has long been a source of electricity and may remain one for many years (coal represents about 80 percent of United States fossil-fuel reserves), it has actually never been the most desirable fossil fuel for power plants. Coal contains less energy per unit of weight than natural gas or oil; it is difficult to transport, and it is associated with a host of environmental issues, among them acid rain. Since the late 1960's problems of emission control and waste disposal have sharply reduced the appeal of coal-fired power plants. The cost of ameliorating these environmental problems, along with the rising cost of building a facility as large and complex as a coal-fired power plant, has also made such plants less attractive from a purely economic perspective.
Changes in the technological base of coal fired power plants could restore their attractiveness, however. Whereas some of these changes are evolutionary and are intended mainly to increase the productivity of existing plants, completely new technologies for burning coal cleanly are also being developed
It can be inferred from the passage that coal became the principal source of electricity in the United States, because it _______.
Đáp án chính xác
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
Đáp án B
Dựa vào thông tin “… created a demand for a cheap, readily available fuel with which to generate large amounts of electric power. Coal seemed to fit the bill…” → có thể suy ra rằng than đá trở thành nguồn điện chính của Hoa Kỳ bởi vì nó tương đối nhiều và không quá đắt đỏ
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 underlined part that needs correction in the each of following questions
I get quite depressed when I think about the damage we are making to the environment.
Xem đáp án »
18/04/2020
57,953
Câu 2:
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions
The new manager _______ very strict rules as soon as he had taken over the position
Xem đáp án »
18/04/2020
33,887
Câu 3:
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions
The opposition will be elected into government at the next election, without a _______ of a doubt
Xem đáp án »
18/04/2020
22,311
Câu 4:
Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in the each of following questions.
Aloha is a Hawaiian word meaning “love”, that can be used to say hello or goodbye
Xem đáp án »
05/06/2024
14,064
Câu 5:
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.
It isn't just that the level of education of this school is high. It's that it's also been consistent for years
Xem đáp án »
18/04/2020
13,420
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
“You _____ have cooked so many dishes. There are only three of us for lunch.”
Xem đáp án »
18/04/2020
12,429
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
Learners of English as a foreign language often fail to_______ between unfamiliar sounds in that language
Xem đáp án »
18/04/2020
12,420
về câu hỏi!