首页
登录
职称英语
"Pangea" Read a short passage and then listen to part of a lecture on th
"Pangea" Read a short passage and then listen to part of a lecture on th
游客
2025-02-07
7
管理
问题
"Pangea"
Read a short passage and then listen to part of a lecture on the same topic.
Reading Time: 45 seconds
Pangea
Plate tectonics assumes that the Earth’s rigid outer layer is comprised of a number of slabs called plates, which are constantly in motion, changing the position of land masses and seascapes relative to each other throughout history. The plates move slowly but continuously at about the rate of 2 inches every year. The movement of the plates themselves may be caused by the unequal distribution of heat and pressure below them. Very hot material deep within the mantle, that is, the layer of rock inside the Earth, moves upward while the cooler layer descends into the mantle, putting the outer crust of the continents in motion. Several large plates include an entire continent with its surrounding seafloor; however, the boundaries of the plates do not correspond precisely with the seven continents that we recognize today.
Now listen to part of a lecture in a geography class. The professor is talking about Pangea.
Question
Explain how plate tectonics relates to the theory of continental drift.
Preparation Time: 30 seconds
Recording Time: 60 seconds
Narrator 2: Number 4. Read a short passage and then listen to part of a lecture on the same topic. Then listen for a question about them. After you hear the question, you have 30 seconds to prepare and 60 seconds to record your answer.
Narrator 1: Now read the passage about Pangea printed on page 496. You have 45 seconds to complete it. Please begin reading now.
[Reading time: 45 seconds] Narrator 1 : Now listen to part of a lecture in a geography class. The professor is talking about Pangea.
Professor:
The theory of continental drift posits that 250 million years ago the continents were all connected in one gigantic continent, which we refer to as Pangea, and that was surrounded by one huge ocean called Panthalassa. At that time, the northernmost region of the continent corresponded to a landmass that included most of the modern continent of Asia, and Europe was south of the Asian region instead of north as it is now. So Asia and Europe were connected to the west with what is now North America. Africa and the Arabian Peninsula were positioned south of Europe with South America to the west, India to the east, and Antarctica and Australia south and southeast. Then, about 200 million years ago, this super continent began to separate into a northern continent and a southern continent. The northern continent was made of what is currently North America, Greenland, Europe, and Asia, and the southern continent included Antarctica, Australia, India, and South America. By 135 million years ago, the two continents had moved into positions that began to resemble the map that we see today, with seven continents.
Narrator 1 : Explain how plate tectonics relates to the theory of continental drift.
Narrator 2: Please prepare your answer after the beep.
Beep
[Preparation time: 30 seconds]
Narrator 2: Please begin speaking after the beep.
Beep
[Recording time: 60 seconds]
Beep
选项
答案
Rexponses will vary.
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3947488.html
相关试题推荐
NarratorListentopartofalectureinasociologyclass.Nowget
NarratorListentopartofalectureinasociologyclass.Nowget
NarratorListentopartofalectureinasociologyclass.Nowget
NarratorListentopartofalectureinacomputerscienceclass.
NarratorListentopartofalectureinacomputerscienceclass.
NarratorListentopartofalectureinacomputerscienceclass.
NarratorListentopartoftalkinaneconomyclass.Nowgetready
NarratorListentopartoftalkinaneconomyclass.Nowgetready
NarratorListentopartoftalkinaneconomyclass.Nowgetready
NarratorListentopartofatalkinahistoryclass.Nowgetread
随机试题
[originaltext]M:First,Iwanttothankyoufordoingthissurvey.Thisisano
Itiscustomaryforadultstoforgethowhardanddullandlongschoolis.T
Onaverage,Americankidsages3to12spent29hoursaweekinschool,eigh
特别值得一提的是,司马迁不仅参考皇家的历史记录,还走遍中国求证信息的真伪。Whatisparticularlyworthmentioningisth
三、教学语言技能 (一)教学语言技能的含义 教师在课堂上
采用3m直尺进行路面平整度测定时,应首尾相接连续测量()尺。A.3 B.5
注册会计师在与治理层沟通补充事项时,以下各项中不恰当的沟通内容是( )。A、注
碘量法测定维生素C的含量的方法中不包括A.使用新沸过的冷水,是为了减少水中溶解氧
当消费函数是一条通过原点且向右上方倾斜的直线时,则()。A.边际消费倾向递增
在必要情况下,收到检举材料和处理检举的相关部门及人员可以将被检举人姓名和检举材料
最新回复
(
0
)