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
2024-01-25
6
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(solid matter that settles at the bottom of a liquid)on the deep sea floor, but I’m confused. For that to happen, there would have to be some kind of force down there moving the mud or sand or whatever, right? But I thought there weren’t any waves or currents that deep in the ocean.
M: That’s not exactly correct. 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. That wasn’t in the book but the term came up in class. Do you remember what it means?
W: Um, turbidity currents? Oh, yeah! Isn’t that when sediment like sand or mud gets stirred up and mixes with water? And then this mixture flows through the water around it, right?
M: Good!
W: Uh, 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 of 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.
Questions 9 to 12 are based on the conversation you have just heard.
9. What is the main topic of the discussion?
10. What does the professor ask the student to explain?
11. According to the professor, how do earthquakes cause turbidity currents?
12. Why does the professor mention desert winds?
选项
A、The strength of ocean currents.
B、The movement of sediment deep in the ocean.
C、A new way of measuring the depth of the ocean.
D、The best methods for studying deep ocean processes.
答案
B
解析
选项内容概括性强,故本题很可能考查对话话题。对话中女士向男士咨询第12章中中她不明白的内容(erosion and the deposit of sediment on the deep sea floor),后面部是男士针对此问题进行回答。由此可见,整个对话讨论的话题是海底沉淀物的运动,故答案为B)。
转载请注明原文地址:https://tihaiku.com/zcyy/3393687.html
相关试题推荐
Eachartistknowsinhisheartthatheissayingsomethingtothepublic.He
Eachartistknowsinhisheartthatheissayingsomethingtothepublic.He
Eachartistknowsinhisheartthatheissayingsomethingtothepublic.He
Eachartistknowsinhisheartthatheissayingsomethingtothepublic.He
Eachartistknowsinhisheartthatheissayingsomethingtothepublic.He
Eachartistknowsinhisheartthatheissayingsomethingtothepublic.He
Eachartistknowsinhisheartthatheissayingsomethingtothepublic.He
Eachartistknowsinhisheartthatheissayingsomethingtothepublic.He
Eachartistknowsinhisheartthatheissayingsomethingtothepublic.He
Eachartistknowsinhisheartthatheissayingsomethingtothepublic.He
随机试题
Astudyofpeoplewhousedcellphonesforanaverageoflessthanthreeyea
Sooftenintheworkplace,womenassumethattheyhavetobejustlikeevery
[originaltext]Goodmorning.TodayI’dliketotalkaboutelectroniccigaret
Allthroughmyboyhoodandyouth,Iwasknownasanidler;andyetIwasalw
青藏铁路(Qinghai-TibetRailway)是西部大开发(WesternDevelopmentProgram)的标志性工程,是中国新世纪四
以下不属于专利法律关系的主体是?()A.发明人 B.后申请人 C.职务发
供应链的静态链状模型中,产品的最初来源和最终去向是( )。A.供应商 B.经
以下不属于结核性脑膜炎的临床表现的是A、头痛 B、呕吐 C、意识障碍
关于混悬剂常用稳定剂的叙述中哪一项是错误的A.最常用的润湿剂是HLB值7~11的
一般成人高血压患者血压控制目标值最高不超过( )。A.130/85mmHg
最新回复
(
0
)