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　　2020年9月四级第1套听力News 1解析

　　新东方沈阳学校 刘帅

　　【试题】

　　A NASA satellite orbiting over Portugal took photographs that reveal the effects of pollution from ships. One of the photos shows the thin film of clouds above the brilliant blue of North Atlantic cut by white lines of thicker clouds that look like scars. [1] NASA officials explained those thicker clouds are signs of ship traffic blow. when ships power their ways through the ocean, they pump exhausts 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 exhausts of the 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 kilometers from end to end, NASA officials said. [2] It’s likely that these sorts of clouds are having some effect over global climate, according to NASA officials. But scientists are not yet sure what effects it has.

　　Questions 1 and 2 are based on the news report you have just heard.

　　Q1. What is caused the fake clouds in the photos taken by a NASA satellite?

　　Q2. What do NASA officials think about the fake clouds?

　　【答案】

　　(见上文划线部分)

　　【解析】

　　Q1. 根据听力问题中的关键词“the fake clouds”和“NASA officials”可知，听力原文中定位处表示“美国宇航局官员解释说，这些较厚的云层反映出下面船只往来的迹象。当轮船在海洋中行驶时，它们会像汽车一样将废气排放到大气中。这些大量的粒子可以形成云。”因此可得出NASA照片里所谓的“云”其实归因于船只排放的废气。

　　Q2. 根据“NASA officials”可以定位至原文后半部分，文中划线句提到“美国宇航局官员表示，这些云很可能对全球气候产生了一些影响。”

　　【听力述评】

　　本篇文章为科普文，其中出现许多相关词比如“NASA, satellite”等，围绕照片中“云”的形成原因及背后可能的影响展开。考生应注意识别关键词，并通过“...said”“according to...”识别出人物观点，与选项进行对应。

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