首页
登录
职称英语
[originaltext] The ordinary raindrop is a mighty earthmover with sufficient
[originaltext] The ordinary raindrop is a mighty earthmover with sufficient
游客
2024-06-08
1
管理
问题
The ordinary raindrop is a mighty earthmover with sufficient strength to cut rock. When rainwater collects on the surface of the ground, some of it evaporates and some of it sinks into the earth. The remainder begins to flow downhill, commencing its lengthy journey from brook to stream to lake, or to a river that will carry it to the sea.
As water flows along the ground, it picks up sand, pebbles, even boulders. It uses them to gnaw at the sides and bottoms of its channel, gradually loosening more earth.
By this process enormous amounts of mud and rock are moved from the land to the sea. Each year the Mississippi River carries 730 million tons of solid matter into the Gulf of Mexico.
This constant hauling of land into the sea is lowering the United States’ average height above sea level at a rate of about one foot every 9,000 years. If erosion continues at the same rate, the United States will be worn completely down to sea level in about 23 million years.
What does erosion by water result in?
选项
A、It will rise an average of 1 foot.
B、It will be worn down an average of 1 foot.
C、It will be worn down to sea level.
D、It will lose 730 million tons of solid matter.
答案
C
解析
事实细节题 文章的最后谈到了水对陆地的巨大冲击力可以使陆地逐渐下降,因而美国将在 2300万年后完全淹没在海平面以下。
转载请注明原文地址:https://tihaiku.com/zcyy/3624709.html
相关试题推荐
[originaltext]RobertEdwardswasblindedinanautomobileaccidentnineyea
[originaltext]M:Canyouspareamoment,dear?Iwantyoutolistentothislet
[originaltext]W:Ineedtocatchthebusanditleavesat10:50.M:Then,you’
[originaltext]W:Ineedtocatchthebusanditleavesat10:50.M:Then,you’
[originaltext]W:Ineedtocatchthebusanditleavesat10:50.M:Then,you’
[originaltext]W:Ineedtocatchthebusanditleavesat10:50.M:Then,you’
[originaltext]W:Ineedtocatchthebusanditleavesat10:50.M:Then,you’
[originaltext]I’mhavingproblemslivingwithColin.We’vebarelyspokento
[originaltext]I’mhavingproblemslivingwithColin.We’vebarelyspokento
[originaltext]I’mhavingproblemslivingwithColin.We’vebarelyspokento
随机试题
【B1】[br]【B18】A、moreB、veryC、quiteD、muchA形容词比较级。本句中表明黄色的警示作用又与红色进行比较,因此用basi
[originaltext]Goodevening.YouarelisteningtoPopWorldofBCDInternati
Languagebarrierspresentavarietyofchallengesforchildrenofanyage.I
Hereamidthesteelandconcretecanyons,greengrassgrows.Ahawthorntree
TheEuropeanUnionhadapprovedanumberofgeneticallymodifiedcropsuntil
崩解剂的作用机理有().().润湿热和产气作用。
新员工上岗前的三级安全教育通常是指()。A、进厂、进企业、进班组 B、进钢筋班
A.细菌 B.真菌 C.病毒 D.支原体 E.衣原体 F.立克次体需用
马斯洛的需求层次不能逾越,必须在低层级满足之后才能产生高一层级的需要。
与普通股股票相比,优先股股票的特点在于()。A.收益分配的优先权 B.剩余财
最新回复
(
0
)