The passage suggests that
Câu hỏi
Nhận biếtRead the passage carefully, then choose the correct answers.
At present, people depend on unlimited energy to power their everyday lives. A wide range of energy-run devices and modern conveniences are taken for granted, and although it may seem that we will never be in danger of living without those conveniences, the fact is that many supplies of energy are dwindling rapidly. Scientists are constantly searching for new sources of power to keep modern society running. Whether future populations will continue to enjoy the benefit of abundant energy will depend on the success of this search.
Coal, oil, and natural gas supply modern civilization with most of its power. However, not only are supplies of these fuels limited, but they are a major source of pollution. If the energy demands of the future are to be met without seriously harming the environment, existing alternative energy sources must be improved or further explored and developed. These include nuclear, water, solar, wind, and geothermal power, as well as energy from new, nonpolluting types of fuels. Each of these alternatives, however, has advantages and disadvantages.
Nuclear power plants efficiently produce large amounts of electricity without polluting the atmosphere; however, they are costly to build and maintain, and they pose the daunting problem of what to do with nuclear wastes. Hydroelectric power is inexpensive and environmentally safe, but impractical for communities located far from moving water. Harnessing energy from tides and waves has similar drawbacks. Solar power holds great promise for the future but methods of collecting and –concentrating sunlight are as yet inefficient, as are methods of harnessing wind power.
Every source of energy has its disadvantages. One way to minimize them is to use less energy. Conservation efforts coupled with renewable energy resources, such as a combination of solar, water, wind, and geothermal energy and alternative fuels, such as alcohol and hydrogen, will ensure supplies of clean, affordable energy for humanity's future.
The passage suggests that ______.
Đáp án đúng: B
Lời giải của Tự Học 365
Giải chi tiết:
Giải thích:
Đoạn văn gợi ý rằng ______.
A. mọi người sử dụng năng lượng mà không suy nghĩ nhiều về nguồn của nó
B. việc tìm kiếm các nguồn năng lượng chủ yếu là một vấn đề cho tương lai
C. các nhà khoa học tin rằng chúng ta sẽ không bao giờ phải đi nếu không có những tiện nghi hiện đại
D. xã hội hiện đại đòi hỏi một lượng năng lượng tối thiểu để tiếp tục hoạt động
Thông tin: Whether future populations will continue to enjoy the benefit of abundant energy will depend on the success of this search.
Tạm dịch: Việc dân số trong tương lai có tiếp tục được hưởng lợi ích từ nguồn năng lượng dồi dào hay không sẽ phụ thuộc vào sự thành công của cuộc tìm kiếm này.
Chọn B
Luyện tập
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