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
47
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
It’sraining.Thereisa_____possibilitythatshewon’tcome.A、distinctB、dist
WhatisMr.Johnson’smainreasonforfindinganewjob?[originaltext]W:Hello,M
D由逻辑电路的基本关系变换可得结果,变换中用到了逻辑电路的摩根定理。
当事人为了重复使用而预先拟定并在订立合同时未与对方协商的条款称为( )。A.格式
小型构筑物和地下管线是城市道路路基工程中必不可少的部分,地下管线施工必须遵循()
人的身心发展的特点有()A.顺序性 B.阶段性 C.不平衡性 D.互补性
根据国际法相关规则,关于国际争端解决方式、,下列哪些表述是正确的?A、甲乙两国就
甲公司是一家国内中小板上市的制造企业,基于公司持续发展需要,公司决定优化资本结构
27岁初产妇,妊娠40周,阵发性腹痛10小时,宫缩10~15分钟一次,持续30秒
信息存储数字化和存储相对集中有利于()。A.项目参与各方协同工作 B.项目管
最新回复
(
0
)