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、To protect beachfront property. B、To reduce the traffic on beach roads. C、To provide privacy for homeowners. D、To define prope
A、To protect beachfront property. B、To reduce the traffic on beach roads. C、To provide privacy for homeowners. D、To define prope
admin
2018-11-19
29
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、To protect beachfront property.
B、To reduce the traffic on beach roads.
C、To provide privacy for homeowners.
D、To define property limits.
答案
A
解析
细节题。根据Some way communities have tried to protect their building and roads and to build seawalls.可知建造海堤的为了保护海滨资产,如楼房和道路。因此,正确答案为A。
转载请注明原文地址:https://kaotiyun.com/show/DuH7777K
0
大学英语六级
相关试题推荐
UsingFacebookmakespeoplesadder,atleastaccordingtosomeresearch.Butjustwhatisitaboutthesocialnetworkthattakes
A、Don’texercisetoomuch.B、Takesomemedicines.C、Wearmoreclothestokeepwarm.D、Becarefulaboutmountains.A细节题。根据justta
Womenareconsidered"heavydrinkers"iftheyhaveeightormoredrinksaweek,accordingtotheCentresforDiseaseControland
Dopeoplegethappierormorefoul-temperedastheyage?Stereotypesofirritableneighbors【C1】______.scientistshavebeentryin
Withitsrecession-friendlycoffeeprices,plentifultablesandavailablebathrooms,McDonald’srestaurantsalloverthecountr
TheDodgeBrothersA)Itwas100yearsagothisweekthattheDodgebrothersfoundedthepowerfulcarbrandthatstillbearsthei
A、Thetheoryhasrecentlybeenprovedbydirectobservation.B、Atleasttwokindsofevidencesupportthetheory.C、Thedatacol
Atsomepointin2008,someone,probablyineitherAsiaorAfrica,madethedecisiontomovefromthecountrysidetothecity.T
A、InItaly.B、InSpain.C、InFrance.D、InSwitzerland.C录音提到,PSCamping在法国拥有themajorityofsites(大部分的营地)。所以C项正确,most是themajori
A、Mankind’seconomicdevelopment.B、Huntersandotheranimals.C、Climatechangeandairpollution.D、Thelengthofmigrationpat
随机试题
下列符合心电图诊断窦性停搏的是()
下列属于会计核算软件的是()。
集装箱箱体外表动植物检疫,主要检查有无( )等,并对来自动植物传染源国家和地区的集装箱箱体外表实施防疫消毒。
下列各项表述中,正确的是()。
在期望值决策中,所说的期望值是( )。
“文化分析”理论是情境开发模式的理论基础,该理论是由()提出的。
某水渠长100米,截面为等腰梯形,其中渠面宽2米,渠底宽1米,渠深2米。因突降暴雨,水深由1米涨至1.8米。则水渠水量增加了:
在中国传统思想文化中,我们到处可以看到节俭的影子。无论是道家的节用寡欲思想,还是儒家的节用伦理思想,再或是墨家的节用贵俭思想,抑或是法家的节用能动思想,还有《周易》的节用简易思想,都是充满着对大自然的敬畏之情,对造化的感恩之意。正因为这种崇敬与感恩,所以我
讲演、授课、作报告等,属于()。
设有关系模式R(E,N,M,L,Q),其函数依赖集为F={E→N,EM→Q,M→L},则关系模式R达到了(53),该关系模式(54)。(53)
最新回复
(
0
)