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
32
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://jikaoti.com/ti/iwSFFFFM
0
大学英语六级
相关试题推荐
A、Twodays.B、Threedays.C、Fourdays.D、Fivedays.B推断题。根据Ithaslastedforthreedays可知他病了三天了。因此,正确答案为B。
A、Shegotaglimpseofthequeen.B、ShehasbeentoLondonforrelax.C、ShehadawonderfultimeinLondon.D、Shesawmanyoldc
Allthroughtheagesthebathasbeenacreatureofgreatmystery.BatshaveinfluencedtheimaginationoftheWesternWorldsin
A、ItcancausefloodingB、Itcancarrydiseasesthataffectanimals.C、Itcanintroducetoomuchsaltintothesoil.D、Itcandi
A、Theanimalsoverfertilizethesoil.B、Deadplantrootscan’tholdthesoiltogether.C、Thewrongtypesofplantsareleftsta
Baby-NamingTrendsA)Overthelastfiftyyears,Americanparentshaveradicallyincreasedthevarietyofnamestheygivetheirc
AnimalsontheMoveA)Itlookedlikeascenefrom"Jaws"butwithoutthedramaticmusic.Ahugesharkwasslowlyswimmingthrou
DeerPopulationsofthePugetSoundA)TwospeciesofdeerhavebeenprevalentinthePugetSoundareaofWashingtonStateinth
DeerPopulationsofthePugetSoundA)TwospeciesofdeerhavebeenprevalentinthePugetSoundareaofWashingtonStateinth
DeerPopulationsofthePugetSoundA)TwospeciesofdeerhavebeenprevalentinthePugetSoundareaofWashingtonStateinth
随机试题
“其身正,不令而行;其身不正,虽令不从。”孔子的这句名言体现的德育方法是()。A.实践锻炼教育法B.榜样示范教育法C.陶冶教育法D.品德评价教育法
女性,35岁,前臂被铁棒击伤,X线片显示尺、桡骨骨折,近端平行排列,而骨折远端则桡骨重叠于尺骨之上。该骨折的位置在
某患儿3岁,因结核性脑膜炎入院治疗。目前该患儿表现为精神呆滞、睡眠不安、双目凝视、喜哭。该患儿目前适宜的护理措施是
调配处方“四查十对”的内容A.对科别B.对临床诊断C.对患者姓名、年龄D.对药品性状、用法用量E.对药名、剂型、规格、数量查配伍禁忌的内容是
患者,女性,63岁。不慎摔倒,手掌着地。可能造成的骨折不包括
背景资料:在某桥梁总体施工完毕后,对其进行检测时,某技术人员制定了如下的桥梁总体检测项目:(1)桥梁的净空;(2)桥面中心偏位和桥面宽度;(3)引道中心线与桥梁中心线的衔接以及桥头高程衔接。其中对检测的要求
疏浚工程定额中,自然影响包括()。
甲企业拥有一块土地的使用权,其中的40%自用,另60%出租给乙企业生产经营使用,则()。
Outside-the-classroomLearningMakesaBigDifferencePuttingabunchofcollegestudentsinchargeofa$300,000DanceMa
Whatisthespeaker?
最新回复
(
0
)