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
65
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、By crushing large amounts of stone.
B、By causing mud or sand to mix with ocean water.
C、By creating large waves on the surface of the ocean.
D、By greatly increasing the ocean’s depth in some areas.
答案
B
解析
选项均以“By+现在分词”开头表明,本题考查行为方式。对话中教授在解释turbidity currents的形成时说earthquake…throws up…mud or sand that becomes suspended in…water,由此可知,地震带动泥沙运动,最后与海水混合形成浊流,故答案为B)。
转载请注明原文地址:https://tihaiku.com/zcyy/3393689.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
我们每一个人都想去看展览。Allofuswishtogototheexhibition.
[originaltext]Allbigcitiesarequitesimilar.LivinginamodernAsianci
Thedebateoverwhetherdogsorcatsmakebetterpetswasgivenanewdimensi
在显微镜下测量细胞及细胞内含物等的大小时使用的长度单位是A.nm B.cm
患者,男性,51岁,患肝硬化已4年,近期常有刷牙出血,皮肤反复出现出血点,查血小
随采随灌的预防性灌浆方法的优点是( )。A.灌浆及时 B.适用于开采特厚煤层
以下不属于精神活性物质的是()A:烟 B:麻醉药品 C:咖啡 D:镇静催眠
禁毒是全社会的共同责任,我国禁毒工作实行()为主的方针。A.预防 B.禁
智力活动转向头脑内部,借助言语作用于观念性对象的阶段是( )。 A.原型定向
近代教育的巨大变化表现在哪些方面?
最新回复
(
0
)