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
24
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、To explain the effects of turbidity currents.
B、To explain how winds cause turbidity currents.
C、To remind the student about the next assignment.
D、To remind the student where ocean sediments originate.
答案
A
解析
选项均以“To+原形动词”开头表明,本题考查做某事的目的。由对话中提到的Then it’s just likethe winds blowing across the desert picking up sand…Moving it…dropping it somewhere else可知,是将turbiditycurrents的作用与desert winds作用进行类比,答案为A)。
转载请注明原文地址:https://tihaiku.com/zcyy/3393690.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
Haveyoueverwonderedwhatourfutureislike?Practicallyallpeople【C1】__
______thedangerfromenemyaction,peoplehadtocopewithasevereshortageo
Althoughtheenjoymentofcolorisuniversalandcolortheoryhasallkinds
下列关于一般性货币政策工具表述正确的是()。 ①它是中央银行普遍或常规
共用题干 甲房地产开发公司拟在市郊开发建设一住宅项目,该项目占地100000
与2006年7月相比,2007年同期哪个港口货运吞吐量的同比增长率与沿海港口
民警察必须以《人民警察法》作为自己根本的活动准则。( )
4月22日,新疆首个高原机场()机场通航。A.地窝堡国际机场 B.石河子
广义的依法收贷方式包括(??)。A.处理变卖抵押物 B.加罚利息 C.提前收
一份货运险溢额分保合同,规定每风险单位的自留额为20万元,第一溢额合同限额为10
最新回复
(
0
)