首页
登录
职称英语
[originaltext] Your professor has asked me to talk to you today about the to
[originaltext] Your professor has asked me to talk to you today about the to
游客
2023-08-26
35
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. Someway, communities have tried to protect their buildings and roads and to build seawalls.
However, geologists have found that such stabilizing structures actually speed up the destruction of the beaches. These beaches with seawalls, called stabilized beaches, are much narrower than beaches without them. You 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 when it returns to the sea as it doesn’t carry back much sand. On the other hand, when the water hits 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 shorelines.
Questions 33 to 35 are based on the passage you have just heard.
33. Why do communities build seawalls?
34. How does a gently-sloping beach help prevent erosion?
35. What do the geologists advise people to do?
选项
A、By sending water directly back to the sea with great force.
B、By reducing wave energy.
C、By reducing beach width.
D、By stabilizing beachfront construction.
答案
B
解析
选项均以By+现在分词开头表明,本题可能考查做某事的方式。由短中提到的If the flow of the beaches is gentle, the water energy is lessened as it washes up along the shore可知,一个稍有斜度的海滩可以减少波浪的能量,从而有助于阻止侵蚀,故答案为[B]。
转载请注明原文地址:https://tihaiku.com/zcyy/2959415.html
相关试题推荐
[originaltext]Eventhemostenthusiasticshopperhasabaddaysometimes:(
[originaltext]W:IunderstandyouaretakingtheAmericanliteratureseminarth
[originaltext]W:You’rebusyrunningtheFamiliesandWorkInstitute.(23)Whyd
[originaltext]W:WhatisyourplanforthisValentine’sDay?M:Well,rosesand
[originaltext]M:Ijustwantedtoseehowyouwere.How’smarriedlifetreating
[originaltext]W:Excuseme,myhusbandandIbookedadoubleroom,buttheroom
[originaltext]M:Welcomeback.Well,didyouenjoyyourtrip?W:Itwasfascin
[originaltext]Overthepastsixweeks,Nicky,42,hascutherdailyroutine
[originaltext]W:I’mFaithDonnelly.Thisweekonourprogram,wewilltalkabo
[originaltext]M:Thisweek,wewillansweraquestionfromafreshman,Erin.Er
随机试题
→HolmesandRahe(1967)developedtheSocialReadjustmentRatingScale(SRRS
Howdidthemantravelabroad?In______car.[originaltext]Amanwastravel
驾驶机动车由加速车道进入高速公路行驶,以下做法错误的是什么?()A.在加速车道
河北省2010年全年城镇居民人均可支配收入达16263.4元,比上年增长10.
"相恶"是指A.一种药物的毒性或副作用,能被另一种药物减轻或消除 B.两种药物
统计某月份商品平均价格的计算方法如图8所示。将E2单元格的公式移动到E
临床可用于治疗上呼吸道感染的是A.大青叶、苦参B.黄芩、栀子C.大青叶、金银花D
()益基金的会计核算和资产估值的责任主体。 A.中国证监会B.基金登记机构
基本医疗卫生制度的四大体系不包括A.医药卫生监管体系 B.医疗服务体系 C.
牛黄抱龙丸能清热镇惊、祛风化痰,其主治病证是A.痰浊阻肺之顿咳 B.食滞化热之
最新回复
(
0
)