問題詳情
Since the legendary Prometheus first stole the fire of heaven, virtually all energy consumed byhuman beings has been fathered by the Sun. Coal, oil, and gas are residues of plants and animals oncefired to life by the warm rays of our nearest star. Solar heat also drives the Earth’s rain cycle, poweringmodern hydroelectric generators. Windmills that pump water or produce electricity turn because ofsolar-heated currents of air. But the Earth is fast running out of these precious reserves of storedsunshine. At our current pace, we will consume in the next 25 years alone an amount equal to all theenergy used by human beings in recorded history. If such consumption continues, obviously alternativesources must be found. And the majority of experts agree that mankind must look to the Sun to helpsolve our energy needs. Already the Sun’s energy is being put to limited use in homes and buildingsaround the world. The most common examples are rooftop solar heaters that provide cheap hot waterfor washing and bathing. Today the Sun’s roaring hydrogen-fueled furnace powerseducational-television sets in Africa and navigation lights on Gulf of Mexico oil rigs. And nearly everyspacecraft that has ever rocketed skyward has depended on purple-blue panels of solar cells.Farfetched? Perhaps not, if we learn to switch on more of the sunshine that warms us all.
【題組】18 According to the passage, which of the following energy forms is NOT from the Sun?
(A) Water power
(B) Nuclear power
(C) Wind power
(D) Gas power
參考答案
答案：B
難度：適中0.636364
統計：A(0),B(7),C(1),D(3),E(0)