首页
登录
职称英语
[audioFiles]2015m3s/audio_ezfj_ezflisteningd_20151_041[/audioFiles]
[audioFiles]2015m3s/audio_ezfj_ezflisteningd_20151_041[/audioFiles]
游客
2023-11-05
45
管理
问题
选项
答案
Light Pollution
We usually think of pollution as a harmful waste substance that threatens the air and water. But some people have become concerned about another kind of pollution. It can be everywhere, depending on the time of day. And it is not thought of as a substance. It is light.
The idea of light pollution has developed with the increase of lights in cities. In many areas, this light makes it difficult or impossible to observe stars and planets in the night sky. Light pollution threatens to reduce the scientific value of research telescopes.
Light pollution is the result of wasted energy. Bright light that shines into the sky is not being used to provide light where it is needed on Earth. Lights that are brighter than necessary also cause light pollution. Recently, two Italian astronomers and an American environmental scientist created a world map of the night sky. The map shows that North America, Western Europe and Japan have the greatest amount of light pollution.
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3161703.html
相关试题推荐
[audioFiles]2015m3s/audio_ezfj_ezflisteningd_20151_120[/audioFiles]
[audioFiles]2015m3s/audio_ezfj_ezflisteningd_20151_119[/audioFiles]
[audioFiles]2015m3s/audio_ezfj_ezflisteningd_20151_117[/audioFiles]
[audioFiles]2015m3s/audio_ezfj_ezflisteningd_20151_049[/audioFiles]
[audioFiles]2015m3s/audio_ezfj_ezflisteningd_20151_048[/audioFiles]
[audioFiles]2015m3s/audio_ezfj_ezflisteningd_20151_047[/audioFiles]
[audioFiles]2015m3s/audio_ezfj_ezflisteningd_20151_046[/audioFiles]
[audioFiles]2015m3s/audio_ezfj_ezflisteningd_20151_010[/audioFiles]
[audioFiles]2015m3s/audio_ezfj_ezflisteningd_20151_006[/audioFiles]
[audioFiles]2015m3s/audio_ezfj_ezflisteningd_20151_060[/audioFiles]
随机试题
Itseemslikeeverydaythere’ssomenewresearchaboutwhetherourfavo
______anyreply,Marydecidedtovisitthecompanyherself.A、HavingnotB、Noth
Ifyou’refindingittoughtolandajob,tryexpandingyourjob-huntingpla
Accordingtothepassage,whichofthefollowingistrue?[br][originaltext]Co
[originaltext]W:Tony,wouldyouliketogoswimmingwithus?M:Thanks,buti
《中国制造2025》在战略任务和重点中提出“推进信息化与工业化深度融合”,其中
妇女,28岁,闭经4个月,下腹坠痛1周,阴道少许出血2天。妇科检查:宫颈外口闭,
共用题干 患者,女性,28岁。因皮肤发红,有瘀斑,伴牙龈出血就诊。2周前曾有上
工程项目在每个阶段都会涉及不同的工作内容,而投资决策和融资主要贯穿于项目的()
A公司为一家上市公司,发生下列股份支付交易:A公司2×20年1月1日经股东大会批
最新回复
(
0
)