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
28
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 is being raised each year.
B、It remains constant.
C、It will reach sea level in 9,000 years.
D、It is being lowered gradually.
答案
D
解析
细节辨别题 文中讲到美国的平均海拔高度在以每9000年一英尺的速度下降。
转载请注明原文地址:https://tihaiku.com/zcyy/3624708.html
相关试题推荐
[originaltext]Haveyoualwayswantedtoinvest,butdidn’tknowwheretoget
[originaltext]Haveyoualwayswantedtoinvest,butdidn’tknowwheretoget
[originaltext]M:Whatdidyoudotocelebrateyourbirthday?W:Myfriendstook
[originaltext]M:Whatdidyoudotocelebrateyourbirthday?W:Myfriendstook
[originaltext]W:Hello,Iboughtthislaptopcomputeralittleoveramonthago
[originaltext]W:Hello,Iboughtthislaptopcomputeralittleoveramonthago
[originaltext]Asmoreandmorepeoplelosetheirjobs,nowitisperhapsthe
[originaltext]Manyscientiststodayareconvincedthatlifeexistselsewhere
[originaltext]Manyscientiststodayareconvincedthatlifeexistselsewhere
[originaltext]Manyscientiststodayareconvincedthatlifeexistselsewhere
随机试题
Thetimeofyearababyisborncanshapewhatprofessiontheywillembarko
A、75%.B、45%.C、30%.D、25%.B细节题。根据句[8-1]和句[8_2]可知,工业的能源消耗差不多是全球能源消耗的45%。因此,B为答案
AnInterviewwithAmericanFuturistPeterSchwartzMr.Yan
中国古代在宫殿的左前方设祖庙,用来祭祀( )。A.祖先 B.土地神 C.粮食
关于儿童溺水下列哪项是错误的A.口对口人工呼吸时,应配合进行胸外心脏按压 B.
口服阿卡波糖降低餐后血糖的机制是()A.抑制小肠上皮细胞α-葡萄糖苷酶
提示肝硬化进入肝功能失代偿期的表现是A.食欲差 B.消化功能下降 C.恶心、
高压熔断器的额定电流选择时,哪些性能不需满足()。(A)可靠性(B)选择
下面属于分项工程的是( )。A.尾矿坝工程中的护坡工程 B.尾矿坝工程中的导
下列各项中,属于收入确认的条件有()。A.企业已将商品所有权上的主要风险和报酬转
最新回复
(
0
)