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
2024-04-02
32
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/3537526.html
相关试题推荐
[originaltext][19]SwedenwasthefirstEuropeancountrytoprintandusep
[originaltext][19]SwedenwasthefirstEuropeancountrytoprintandusep
[originaltext][19]SwedenwasthefirstEuropeancountrytoprintandusep
[originaltext][13]MostAmericansdon’teatenoughfruits,vegetablesorwh
[originaltext][13]MostAmericansdon’teatenoughfruits,vegetablesorwh
[originaltext][9]Whenfacinganewsituation,somepeopletendtorehearse
[originaltext][9]Whenfacinganewsituation,somepeopletendtorehearse
[originaltext][9]Whenfacinganewsituation,somepeopletendtorehearse
[originaltext]W:Mr.DeKeyzer,I’magreatloverofyourbookMomentsBeforet
[originaltext]W:Mr.DeKeyzer,I’magreatloverofyourbookMomentsBeforet
随机试题
Howmuchshouldthemanpay?[br][originaltext]W:Here’sthestand.M:Ah,yes
[originaltext]M:Didyounoticetheyjustbuiltanothercoffeehouseacrossthe
汉字的书法艺术不仅盛行于中国,也传播到了日本、朝鲜等国,被视为东亚的重要艺术和最优雅的写字形式之一。Calligraphy,asatraditional
[originaltext]W:ArtDepartment,thetreasurerBrownspeaking.M:Hello,Profes
Mrs.Petersstoppedplayingthepianowhe
坚定中国特色社会主义道路自信、理论自信、制度自信、文化自信,说到底就是要坚定(
判断健康风险的高低主要根据( )。A.疾病危险性的高低 B.疾病危险性的平均
继唐太宗之后,武则天也大力提倡科举。有一年,她将应举的人集中到洛阳宫殿,亲自出题
在2013—2016年,我国乡村人口增幅最大的年份是: A.2013年
在无效市场条件下,基金管理人不应当尝试获得超出市场的投资回报,而是努力获得与大盘
最新回复
(
0
)