首页
登录
职称英语
[originaltext] Your professor has asked me to talk to you today about the top
[originaltext] Your professor has asked me to talk to you today about the top
游客
2023-08-10
41
管理
问题
Your professor has asked me to talk to you today about the topic that should be of real concern to civil engineers: the erosion of the US beaches. Let me start with some statistics. Did you know that 90% of the coast in this country is eroding, on the gulf of Mexico for instance, erosion averages 4 to 5 feet per year. Over the past 20 years, there has been an increase in building along the coast, even though geologists and environmentalists have been warning communities about problems like erosion. Some way communities have tried to protect their building and roads and to build seawalls. However geologists have found that such stabilizing structures actually speed up to the destruction of the beaches. These beaches with seawalls, called stabilized beaches, are much narrower than beaches without them. U may wonder how seawalls speed up beach loss. The explanation is simple. If the flow of the beaches is gentle, the water energy is lessened as it washes up along the shore. It is reduced even more that returns to the sea so it doesn ’t carry back much sand. On the other hand, when the water hit the nearly vertical face of the seawall, it goes straight back to the sea with the full force of its energy and it carries back a great deal of sand. Because of the real risk of losing beaches, many geologists support a ban on all types of stabilizing construction on the shore lines.
Now listen to the following recording and answer questions 22 to 25.
22. What is the speaker mainly discussing?
23. Why do communities build seawalls?
24. How does a gently sloping beach help prevent erosion?
25. What would the speaker probably advise engineers to do?
选项
A、The increase in beachfront property value.
B、An experimental engineering project.
C、The erosion of coastal areas
D、How to build seawalls.
答案
C
解析
主旨题。根据…the topic that should be of real concern to civil engineers:the erosion of the US beaches.可知主要讨论的是美国沙滩的侵蚀问题。因此,正确答案为C。
转载请注明原文地址:https://tihaiku.com/zcyy/2913334.html
相关试题推荐
MarieCuriewasthefirstfemaleprofessoratSevres,acollegeforgirlswh
MarieCuriewasthefirstfemaleprofessoratSevres,acollegeforgirlswh
MarieCuriewasthefirstfemaleprofessoratSevres,acollegeforgirlswh
[originaltext]M:[23]Somedecadesagomymotherwasreplacedbyacomputer.Her
[originaltext]M:[23]Somedecadesagomymotherwasreplacedbyacomputer.Her
[originaltext][19]Iamhonoredtobewithyoutodayatyourcommencementf
[originaltext][19]Iamhonoredtobewithyoutodayatyourcommencementf
[originaltext][16]LeonardBernsteinsaidthattoachievegreatthings,you
[originaltext][16]LeonardBernsteinsaidthattoachievegreatthings,you
[originaltext][16]LeonardBernsteinsaidthattoachievegreatthings,you
随机试题
Kentassuredhisbossthathewould________allhisenergiesindoinghisnewjob
Whatdoesthefirstadvertisementsayaboutthecandidate’sexperience?He’dbett
Scientistscandeterminesomeone’sfavoritefoodfromtheirbodyshape.They
[originaltext]W:DidyougotothematchonSaturday,Bill?M:No,Alice.(8)I
在电子政务信息系统设计中应高度重视系统的()设计,防止对信息的篡改、越权获
关于月经周期中,生殖激素的变化不正确的是A.经前2天,血E、P水平下降 B.经
2017年我国成年国民图书阅读率为59.1%,比上年增加0.3个百分点;报纸阅读
E省统计局公布的数据显示,2014年上半年E省实现地区生产总值(GDP)5141
(2021年真题)根据《房屋建设与装饰工程工程量计算规范》,(GB58555-
慢性乙型肝炎,病情稳定,近10天突然出现乏力,腹胀,食欲不振,化验肝功ALT30
最新回复
(
0
)