首页
登录
职称英语
[originaltext] Spaceships travel around the earth, go to the moon, and retur
[originaltext] Spaceships travel around the earth, go to the moon, and retur
游客
2024-02-23
33
管理
问题
Spaceships travel around the earth, go to the moon, and return home safely. The astronauts carry important supplies with them on the spaceship -- food, water, and air. Sometimes there are problems on the spaceship, and the astronauts have to understand how the spaceship works in order to repair the problems.
In a way, all of us are really on a spaceship, the planet Earth. We move around the sun at 18 miles per second and never stop. On our spaceship we have four billion people and a limited supply of air, water, and land. These sup- plies, just like the limited supplies on the astronauts’ spaceship, have to be used carefully because we can’t buy new air, water, or land from anywhere else. Everyone needs air, water, and land to live -- this is our environment.
The environment on our planet is a closed system; nothing new is ever added. Nature recycles its resources. Water, for example, evaporates and rises to form clouds. This same water returns to the earth as rain or snow. The rain that falls today is actually tile same water that fell on the dinosaurs 70 million years ago.
Over the years, people have changed the environment. We have poured back into the land, air, and water more wastes than nature can clean. So we have pollution today.
To continue to survive, we must learn how to use the Earth’s resources wisely; without destroying them. To save the spaceship Earth, we must cooperate with nature and learn better ways to use, not abuse, our environment.
选项
A、The present population on earth is fourteen billion.
B、Water is recycled every seventy million years.
C、The planet earth travels around the sun at 18 miles per second.
D、The earth is compared to a spaceship because they both travel around the sun.
答案
C
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3474847.html
相关试题推荐
[originaltext]Teamsofteachersandschooladministratorsfromatleastfou
[originaltext]Itseemslikealmosteveryonebuysorsellsgoodsatyardsal
[originaltext]Itseemslikealmosteveryonebuysorsellsgoodsatyardsal
[originaltext]AfterlivinginEnglandfor20years,mywifeandIdecidedt
[originaltext]AfterlivinginEnglandfor20years,mywifeandIdecidedt
[originaltext]AfterlivinginEnglandfor20years,mywifeandIdecidedt
[originaltext]M:Ok.Nowwe’dbettermakesureyouenjoyyourstudies.Weoffer
[originaltext]W:Whatareyoudoing?M:I’morderingsomefilingcabinetsouto
[originaltext]W:Whatareyoudoing?M:I’morderingsomefilingcabinetsouto
[originaltext]M:Idon’tknowwheretotakeJanetfordinnertonight.W:Havey
随机试题
HowtoWriteaResearchRe
ABriefHistoryofClockClocksAtbest
AteamofGermanscientistshastakenpicturesofanancientfishthatwast
[originaltext]Americanschoolchildrenoftenwearuniformsiftheyattendreligi
伸长率的大小与下列哪项有关?( )A.标距长度 B.试件的直径 C.原标距
劳务派遣单位的职责包括()。A:向被派遣者支付工资 B:为被派遣者提供福利待遇
证券公司应当在集合资产管理计划设立工作完成后(),将集合资产管理计划的设立情况报
肾小管性蛋白尿见于A.剧烈运动 B.尿道炎 C.肾病综合征 D.间质性肾炎
实施监理的工程,办理工程质量监督注册手续需提供的资料有( )。A.必要的施工图纸
下列关于网络图的说法错误的有( )。A.一个网络图表示一项计划任务 B.单代
最新回复
(
0
)