【答案解析】[听力原文]
This is the central district and it"s 11 o"clock at night / but if you put on your sunglasses it wouldn"t be too dark / and that"s because there are lights everywhere. / Now, researchers say that light pollution is a big problem. / When you look up into the sky, not a single star is in sight. / In fact the sky is a light shade of grey / because of the amount of light in the city / and this is affecting people"s lives because these lights / are reflecting off the windows and bouncing into people"s homes. / Sometimes the lights are so bright that it makes it hard to fall asleep.

[解析] 本文主题：光污染。本文介绍了光污染以及它的危害，是一篇科普性文章。全文采用现在时，在描写光污染如何影响人们生活时采用的是现在进行时，请注意区分。文中需要注意的较易拼错的单词有“central，pollution，grey”，需要注意时态和单复数的单词有“sunglasses，reflecting，bouncing”。