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外语
A、Ship traffic in the Atlantic. B、Warm currents in the ocean. C、Exhaust from cars in Europe. D、Particles emitted by power plants
A、Ship traffic in the Atlantic. B、Warm currents in the ocean. C、Exhaust from cars in Europe. D、Particles emitted by power plants
admin
2021-01-06
36
问题
A NASA satellite orbiting over Portugal took photographs that reveal the effects of pollution from ships. One of the photos shows a thin film of clouds above the brilliant blue of the North Atlantic, cut by white lines of thicker clouds that look like scars. NASA officials explained those thicker clouds are signs of ship traffic below. When ships power their way through the ocean, they pump exhaust into the atmosphere, just as cars do. And those massive amounts of particles can cause clouds to form. Get enough of those particles in one place, as from the exhaust of a ship, and they can lead to the creation of new clouds easily visible from space. “These clouds can be huge. Some of them stretch hundreds of kilometres from end to end,” NASA officials said. It’s likely that these sorts of clouds are having some effect on the global climate, according to NASA officials. But scientists aren’t yet sure what effect it has.
Questions 1 and 2 are based on the news report you have just heard.
1. What has caused the thick clouds in the photos taken by NASA satellite?
2. What do NASA officials think about the thick clouds?
选项
A、Ship traffic in the Atlantic.
B、Warm currents in the ocean.
C、Exhaust from cars in Europe.
D、Particles emitted by power plants.
答案
A
解析
细节辨认题。新闻开头提到,美国宇航局官员解释说这些较厚的云层是大西洋上船舶往来的标记,船舶在大西洋上来回穿梭,就像汽车将废气排放到大气中一样排出颗粒物,大量的颗粒便形成了云层。
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大学英语四级
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