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
2023-06-24
41
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、What a turbidity current is.
B、The causes of underwater earthquakes.
C、How winds can affect some ocean currents.
D、Why the book talks about turbidity currents.
答案
A
解析
男士解释海底沉淀物运动时提到了浊流(turbidity currents),并说这个术语曾经在课堂上提过,然后男士问Do you remember what it means?由此可见,教授希望学生能解释浊流,故答案为A)。
转载请注明原文地址:https://tihaiku.com/zcyy/2777422.html
相关试题推荐
Hollywoodhasamessageforscientists:Ifyouwantsomethingthat’s100%ac
Hollywoodhasamessageforscientists:Ifyouwantsomethingthat’s100%ac
[originaltext]I’mgladtoseesomanyofyouhere.We’vebecomereallyalar
[originaltext]I’mgladtoseesomanyofyouhere.We’vebecomereallyalar
[originaltext]I’mgladtoseesomanyofyouhere.We’vebecomereallyalar
[originaltext]Climatechangeismakingitharderthanusualforscientists
[originaltext]Climatechangeismakingitharderthanusualforscientists
[originaltext]Climatechangeismakingitharderthanusualforscientists
[originaltext]Somediseasesareinfectious—likecoldsandfluButwhatabou
[originaltext]M:Hello.Ineedtotalkwithsomeoneaboutmydriver’slicense.
随机试题
Collisionbetweenanaircraftandoneormorebirdsistermedabird-strike.
[originaltext]Torrentialrainandflashfloodscausedairportdelays,transi
下列说法正确的是:()A.集体商标由该组织的成员共同使用 B.集体商标可以
下列因素中,不影响照片对比度的是A.胶片的γ值 B.X线质 C.X线量 D
A.90% B.92% C.95% D.97% E.98% H.N一般
酚妥拉明可用于治疗顽固性充血性心力衰竭的主要原因是()A.扩张肺动脉,减轻右
C解题指导:每个图形的笔画数都为8,故答案为C。
肺痿之病名,最早见于A.《黄帝内经》 B.《金匮要略》 C.《诸病源候论》
试述一般货币政策工具及其作用机制。
甲公司为增值税一般纳税人,2×17年5月开始建造办公楼。下列各项中,应计入甲公司
最新回复
(
0
)