首页
登录
职称英语
[originaltext] Your professor has asked me to talk to you today about the t
[originaltext] Your professor has asked me to talk to you today about the t
游客
2023-09-10
75
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 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、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
文中提到,communities have tried to protect their buildings and roads and to build seawalls,把其中的具体事物buildings and roads概括为抽象事物property即可得出答案为A。
转载请注明原文地址:http://tihaiku.com/zcyy/3002878.html
相关试题推荐
[originaltext]Uptonow,wehavefocusedonthepositiveimpactoftheauto
[originaltext]In1946therewasaprogramintheRioGrandevalleytosubst
[originaltext]In1946therewasaprogramintheRioGrandevalleytosubst
[originaltext]W:Gosh,Fred,anothercupofcoffee?That’syourthirdsincelun
[originaltext]W:Gosh,Fred,anothercupofcoffee?That’syourthirdsincelun
[originaltext]M:Jean,wereyouabletogetthatreportalltypedup?W:Notye
[originaltext]M:Jean,wereyouabletogetthatreportalltypedup?W:Notye
[originaltext]M:Jean,wereyouabletogetthatreportalltypedup?W:Notye
[originaltext]W:Willyoutakethesebookstothelibraryduringyourlunchhou
[originaltext]W:Willyoutakethesebookstothelibraryduringyourlunchhou
随机试题
[originaltext]WheredoIparkmycar?(A)Iliketogothereforawalk.(B)In
通常在未达到拥挤点的情况下,用户消费运输服务几乎不存在( )和排他性,这体现了
某采矿工程采用地下巷道开采,开采前经过调查,该岩层的硬度高、岩性稳定。该矿山采用
人在每一瞬间,将心理活动选择了某些对象而忽略了另一些对象。这一特点指的是注意的(
根据以下资料,回答1~5题: 2008年全年粮食种植面积10670万公顷,比上
甲国发生内战,乙国拟派民航包机将其侨民接回,飞机需要飞越丙国领空。根据国际法相关
(2018年真题)某男,48岁,患肾虚阳痿与肠燥便秘。宜选用的药是( )A.补
女性,32岁,拔下颌牙后出现渐进性张口受限,下颌下淋巴结肿大,除下颌升支后缘稍丰
下列关于证券资产组合中风险的表述,正确的有()。A.系统性风险是能够随着资产种
下列关于劳动争议仲裁委员会的说法中,正确的是()。A.由当地政府授权依法设立,
最新回复
(
0
)