首页
登录
职称英语
[originaltext] In a way, all of us are on a spaceship, the planet Earth. We
[originaltext] In a way, all of us are on a spaceship, the planet Earth. We
游客
2024-03-02
67
管理
问题
In a way, all of us are on a spaceship, the planet Earth. We move around the sun at 18 miles per second and never stop. On our spaceship we have five billion people and a limited supply of air, water, and land. These supplies have to be used carefully because we can’t buy new air, water, or land from anywhere else.
The environment on our planet is a closed system Nothing new is ever added. Nature recycles its resources. Water, for example, evaporates and rises as visible drops to form clouds. This same water returns to the earth as rain or snow. The rain that falls today is actually the same water that fell on the land 70 million years ago.
Today, the Earth is in trouble. Factories pour dirty water into our rivers. Many fish die and the water become unhealthy for people to drink. Cars and factories put poisons into the air and cause plants, animals and people to get sick. People throw bottles and paper out of their car windows, and the roadside becomes covered with all sorts of wastes. Over the years, people have changed the environment, and we have pollution.
To continue to survive, we must learn how to use the Earth’s resources wisely. We have to change our habits and stop dumping such enormous amounts of industrial waste into the water and air. We must cooperate with nature and learn better ways to use, not to abuse, our environment.
选项
A、About 80 miles per second.
B、About 70 miles per second.
C、About 18 miles per second.
D、About 17 miles per second.
答案
C
解析
根据短文的第二句话“We move around the sun at l8miles per second and never stop.”可知C项是正确的。
转载请注明原文地址:https://tihaiku.com/zcyy/3498587.html
相关试题推荐
【B1】[br]【B10】[originaltext]Asummaryofthephysicalandchemicalnatureofl
【B1】[br]【B9】[originaltext]Asummaryofthephysicalandchemicalnatureofli
【B1】[br]【B6】[originaltext]Asummaryofthephysicalandchemicalnatureofli
【B1】[br]【B3】[originaltext]Asummaryofthephysicalandchemicalnatureofli
【B1】[br]【B2】[originaltext]Asummaryofthephysicalandchemicalnatureofli
[originaltext]PresidentBushhasproposedtoincreasethestudyofforeignlang
[originaltext]PresidentBushhasproposedtoincreasethestudyofforeignlang
[originaltext]Everywhere,wateruseisincreasing.Humansalreadyuse54percen
[originaltext]Everywhere,wateruseisincreasing.Humansalreadyuse54percen
[originaltext]W:Hello,Gary.How’reyou?M:Fine!Andyourself?W:Can’tcompl
随机试题
Onemorning,Iwaswaitingatthebusstop,worriedabout【K1】______(be)late
Youshouldbedirectly______withthisissuetomakeanaccuratereportofit.A
ShouldCollegeDormitoriesHavetheInternet?1.许多大学宿舍都接通了网络2.学校宿舍接通网络的利与弊3.我的
[originaltext]Now,listentoPartTwooftheinterview.W:Well,whatarethem
中国近代史上第一次明确将美育列入教育方针,并提出“以美育代宗教”的教育家是()
甲公司成立于2001年,致力于以领先的人工智能技术推动重工业转型升级。公司拥有自
Thechangeinthatvillagewasmiraculou
《变电运维管理规定》:操作人验电前,在临近相同电压等级()测试验电器,确认验电
某医药集团有限公司是一家具有50多年历史的国家一级企业,公司生产10大类170多
β2受体兴奋剂在应用两周后,常引起β2受体下调,使支气管舒张作用减弱。下列哪种药
最新回复
(
0
)