首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
A、Places at the heart of continents. B、Places where continents meet. C、Places where the rock is not stable. D、Places near the co
A、Places at the heart of continents. B、Places where continents meet. C、Places where the rock is not stable. D、Places near the co
admin
2019-05-30
55
问题
(13)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. (14)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. (15) 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://kaotiyun.com/show/vFX7777K
0
大学英语六级
相关试题推荐
TrustMe,I’maRobot[A]Withrobotsnowemergingfromtheirindustrialcagesandmovingintohomesandworkplaces,roboticists
TrustMe,I’maRobot[A]Withrobotsnowemergingfromtheirindustrialcagesandmovingintohomesandworkplaces,roboticists
Sugar—FriendVSEnemyA)Sugariseverywhere.It’sinourdrinks,it’sinourfoods,andit’shiddeninplacesweneverwouldth
Sugar—FriendVSEnemyA)Sugariseverywhere.It’sinourdrinks,it’sinourfoods,andit’shiddeninplacesweneverwouldth
Sugar—FriendVSEnemyA)Sugariseverywhere.It’sinourdrinks,it’sinourfoods,andit’shiddeninplacesweneverwouldth
Sugar—FriendVSEnemyA)Sugariseverywhere.It’sinourdrinks,it’sinourfoods,andit’shiddeninplacesweneverwouldth
随机试题
女性,42岁,全身乏力并消瘦3个月就诊,查脾明显肿大,贫血。无外伤及肿瘤史,切除脾送检。如果怀疑原发性肿瘤,肉眼检查切面所见为
A.留置硅胶导尿管B.耻骨上膀胱穿刺造瘘术C.局部切开D.膀胱镜检术E.耻骨上膀胱切开造瘘术包茎包皮口狭窄所致完全不能排尿
糖尿病最常见的精神症状是
国内常用的钢筋品种中,_______的屈服强度最低。()
项目实施中,按照“量、价”分离原则,控制工程直接成本,主要控制的方面有()。
进行固定资产日常业务处理。根据1月15日测编四部购买了一台价值22000元的绘图设备,净残值率为5%,预计使用5年的资料输入资产卡片进行固定资产增加登记。根据下图给定的“固定资产状况表”和报表公式,进行报表操作。说明:年、月、日设
下列观点中属于唯心主义的有()。
在SQL中,删除表的语句是
Bothcowbirdandcuckoochicks______.AccordingtothestudybyDr.HooverandDr.Robinson,nests______.
Answerquestions71-80byreferringtothesynopsesof4differentbooksonenvironmentaleconomicsinapublisher’sbrochure.A
最新回复
(
0
)