首页
登录
职称英语
[originaltext] Scientists who study the earth tell us that the continents an
[originaltext] Scientists who study the earth tell us that the continents an
游客
2024-03-07
4
管理
问题
Scientists who study the earth tell us that the continents and ocean floors are always moving. Sometimes, this movement is violent and might result in great destruction. Today, we examine the process that causes earthquakes. Scientists now know that the surface of the earth is not as permanent as it had been thought. Scientists explain that the surface of our planet is always in motion. Continents move about the earth like huge ships at sea. They float on pieces of the earth’s outer skin, or crust. Only since the 1960s have scientists begun to understand that the earth is a great, living structure. Some experts say this new understanding is one of the most important revolutions in scientific thought. The revolution is based on the work of scientists who study the movement of the continents—a process called plate tectonics (构造学). Earthquakes are a result of that process. Plate tectonics is the area of science that explains why the surface of the earth changes and how those changes cause earthquakes. Tectonic plates can cause earthquakes as they move. Modern instruments show that about 90% of all earthquakes take place along a few lines in several places around the earth. These lines follow underwater mountains, where hot liquid rock flows up from deep inside the planet. Other earthquakes take place at the edges of continents. Pressure increases as two plates move against each other. When this happens, one plate moves past the other, suddenly causing the earth’s surface to split. Earthquakes are among the most frightening events that nature can produce. At times like these, we remember that the ground is not as solid and unchanging as people might like to think.
Questions 13 to 15 are based on the passage you have just heard.
13. What may lead to earthquakes according to the passage?
14. What do the experts say about this new understanding?
15. Where do earthquakes likely happen?
选项
A、Places at the heart of continents.
B、Places where continents meet.
C、Places where the rock is not stable.
D、Places near the coastlines.
答案
B
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3511893.html
相关试题推荐
[originaltext]M:(5)It’ssocoldnow,butthismorningitwassohotandsunny.
[originaltext]M:(5)It’ssocoldnow,butthismorningitwassohotandsunny.
[originaltext]W:Hello,GraceHotel.M:Listen,(1)theheatingisbrokeninmy
[originaltext]W:Hello,GraceHotel.M:Listen,(1)theheatingisbrokeninmy
[originaltext]W:Hello,GraceHotel.M:Listen,(1)theheatingisbrokeninmy
[originaltext]W:Hello,GraceHotel.M:Listen,(1)theheatingisbrokeninmy
[originaltext]W:Hello,GraceHotel.M:Listen,(1)theheatingisbrokeninmy
[originaltext]W:Well,Mr.Smith,I’velookedintoyourinvoiceandfoundoutwh
[originaltext]W:Well,Mr.Smith,I’velookedintoyourinvoiceandfoundoutwh
[originaltext]W:Right,Iguessyouhavesomeideasforourpromotion.M:Well,f
随机试题
ItissurprisingthatAmericanswhoworship______holdtheuniforminsuchhigh
DowesGinting,themostwantedmanonSumatraIsland,laydying.Hehadaban
A.正常行驶 B.及时让行 C.开启危险报警闪光灯行驶 D.不得变更车道
患者冯某先是食欲不振,后来出现右上腹疼痛、巩膜等黄染。经医院诊断是肝癌晚期,护士
患者,女性,26岁,孕产,妊娠36周,自觉胎动减少1天就诊。提示:胎心监护为无反
病若先见持续高热,面目红赤,后又突然有肢厥面白,脉微欲绝者,当属A.寒极生热
小茴香药材的显微鉴别特征是A.外果皮散有油细胞,栅状石细胞内含硅质块 B.外果
Thechangeinthatvillagewasmiraculou
孕妇,孕35周,宫缩规律,间隔5~6分钟,每次持续约40秒,查宫颈管消退80%,
关于牙本质过敏症脱敏常用治疗方法A.75%氟化钠甘油局部涂擦 B.Nd:YAG
最新回复
(
0
)