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
2023-09-03
69
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 all 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 that returns to the sea so 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.
选项
A、Protecting roads along the shore.
B、Building on beaches with seawalls.
C、Adding sand to beaches with seawalls.
D、Stopping building seawalls.
答案
D
解析
What do the geologists advise people to do?
后三项都与seawalls有关,而[A]却与此无关,故可首先排除。[B]和[D]的意思相反,根据命题规律,这类选项中往往有一个是答案。再根据短文末句提到的Because of the real risk... on all types of stabilizing construction on shorelines可知,地理学家建议人们不要建海堤,故答案为[D]。
转载请注明原文地址:https://tihaiku.com/zcyy/2982455.html
相关试题推荐
[originaltext]Amongwesternrichcountries,peopleintheUnitedStateswor
[originaltext]Adrian’s"AmazingRace"startedearlywhenhisparentsrealiz
[originaltext]Adrian’s"AmazingRace"startedearlywhenhisparentsrealiz
[originaltext]M:Andnow,Mrs.Smith,canyoutelluswhathappenedatyourapa
[originaltext]M:Andnow,Mrs.Smith,canyoutelluswhathappenedatyourapa
[originaltext]M:Iwentoutwithmygirlfriendtoanicerestaurantlastnight
[originaltext]M:Iwentoutwithmygirlfriendtoanicerestaurantlastnight
[originaltext]W:Graceissoannoying,thoughshedoesn’tmeantohurtanybody.
[originaltext]W:Graceissoannoying,thoughshedoesn’tmeantohurtanybody.
[originaltext]W:Graceissoannoying,thoughshedoesn’tmeantohurtanybody.
随机试题
[originaltext]W:There’sisanelementthereaboutcompetitionthough,isn’tth
Thecollectingofpostagestampsisahobbythatinterestspeopleofallage
[originaltext] Chargingyourcellphonemaysoonrequireonlytwoitems:asim
分治算法设计技术( )。A.一般由三个步骤组成:问题划分、递归求解、合并解
预应力钢棒弯曲试验中,直径12mm的钢棒应选择的压头尺寸为()。A.36m
当城市道路红线宽度超过40m时,不宜在城市下道两侧布置的管线是()。(20
对私自拆改煤气燃气的,应当向()报告并通知燃气管理单位。A:房屋管理部门 B:
采用虚构事实或隐瞒真相的方法,非法占有本单位财物,该行为属于()。A.侵吞
下列哪项做法不符合公务员管理规定?()A.某卫生健康委员会干部经有关机关批准在
甲公司20×4年12月将采用成本模式计量的投资性房地产转为自用固定资产,转换日该
最新回复
(
0
)