首页
登录
职称英语
[originaltext]W: Dr. Smith. I need to ask you about something in Chapter 12. We
[originaltext]W: Dr. Smith. I need to ask you about something in Chapter 12. We
游客
2024-06-05
10
管理
问题
W: Dr. Smith. I need to ask you about something in Chapter 12. Well it talks about erosion and the deposit of sediment on the deep sea floor, but I’m confused, because, well, for that to happen there would have to be some kind of force down there moving the mud or sand or whatever, right. But l thought there weren’t any waves or currents that deep in the ocean.
M: That’s not exactly true. It’s true that deep down on the ocean floor we won’t have the same kinds of currents we find in shallower parts. But we do find what we call turbidity currents. This wasn’t in the book but the term came up in class. Do you remember what it means?
W: Umh, turbidity currents? Oh, yeah! Isn’t that when sediment like sand or mud gets stirred up and mixes with water and then this mixer kind of flows through the water around it, right?
M: Good!
W: Umh, but I thought that only happened in rivers.
M: Well, yes. This does occur in rivers, but we see turbidity currents deep in the ocean as well.
W: But how do they get started there?
M: Earthquakes mostly, when an earthquake occurs under water, it throws up tremendous, amounts of mud or sand that becomes suspended in a layer of water near the bottom of the ocean. This layer is so much denser and heavier than other ocean water that it flows right down the slopes o f the ocean floor and gains more and more speed as it moves along. Then it’s just like the winds blowing across the desert picking up sand from one place and moving it along and finally dropping it somewhere else.
选项
A、It’s a comparison, he wants to describe how earthquakes cause turbidity currents.
B、He wants to describe desert winds.
C、He means desert winds can cause turbidity currents.
D、He just talks about another topic.
答案
A
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3620366.html
相关试题推荐
[originaltext]InBritainthereare11nationaldailynewspapersandmostpe
[originaltext]M:Goodafternoon.IhaveanappointmentwithMissKarliatfour
[originaltext]M:Goodafternoon.IhaveanappointmentwithMissKarliatfour
[originaltext]M:Goodafternoon.IhaveanappointmentwithMissKarliatfour
[originaltext]M:TellmeMrs.Clark,Nowdidyoucometobeabeardedlady?W.
[originaltext]M:TellmeMrs.Clark,Nowdidyoucometobeabeardedlady?W.
[originaltext]W:Didyousayyouweredrivingtothetownthismorning?M:Yes,
[originaltext]W:Didyousayyouweredrivingtothetownthismorning?M:Yes,
[originaltext]Youmayrememberthatafewweeksagowediscussedthequesti
[originaltext]IgotmyfirstrealjobwhenIwasten.Mydad,Benjamin,inj
随机试题
TherearemanytheoriesaboutthebeginningofdramainancientGreece.The
Imaginebeingaskedtospendtwelveyearsinaschoolwhichconsistsonlyof
[originaltext]W:Hello,Mr.Cooper.I’mLinaRedner,salesrepresentativeforS
Informationgatheringhashadalonghistoryandtherearemanywaystodoi
Directions:Forthispart,youareallowed30minutestowriteashortessayon
下列关于死亡过程分期的描述,正确的是A.濒死期生命已处于不可逆阶段 B.临床死
建筑物及其附属设施不得突出道路红线和用地红线建造,下列何种情况不受此限制?(
以下关于数据仓库与数据库的叙述中,( )是正确的。A.数据仓库的数据高度结构化
简述激发小学生学习动机的方法。
按预算项目是否直接反映经济效益,政府预算分为()。A.平衡预算和差额预算 B
最新回复
(
0
)