首页
登录
职称英语
Many national parks in the west areas of America are among the United States
Many national parks in the west areas of America are among the United States
游客
2024-02-26
5
管理
问题
Many national parks in the west areas of America are among the United States, most treasured natural spaces. From Yellowstone to Yosemite, US national parks stand as monuments to Americans, love of nature and our spiritual connection to the land. They are unparalleled sources of beauty and recreation—but for how much longer Twelve US national parks are at serious risk from the increasing effects of global war ruing and the greenhouse effect, according to a report from the National Resources Defense Council (NRDC) and The Rocky Mountain Climate Organization titled, Losing Ground: Western National Park Endangered by Climate Disruption.
The report shows how global warming in the dry American West, where temperatures have risen twice as fast as in the eastern United States over the past 50 years, is destroying wildlife habitat, putting specie at risk of extinction, and transforming the landscapes and scenic beauty Americans love. If current trend continue, the report says the glaciers (冰川) in Glacier National Park could all be melted by 2030, along with many of the glaciers and ice caves in the North Cascades National Park, which includes 60 percent o all glacier-covered land in the United States outside Alaska. Within a few years, snow-covered peaks in many parks could be bare of snow throughout the summer, forests, mountain meadows and wildflowers will be sharply reduced; while droughts, wildfires, erosion and floods will increase.
The reports shows the fragile and complex connections that make up natural ecosystems, and how a serious environmental impact from global warming in one area of a national park can begin a chain reaction with devastating effects. For example, as global warming lessens the extreme cold that normally keep mountain bark beetles in check, they are multiplying and infesting whitebark pines (白皮松)—a high altitude species that was previously outside their range—and threatening the trees with extinction. Whitebark pines are an important source of food for gray bears, and their loss would drive the bears into more populated areas in search of food, creating another serious risk to their long term survival. [br] What is the gravest concern expressed by the NRDC report?
选项
A、The fragile and complex connections making up natural ecosystems.
B、A serious environmental impact from global warming.
C、A chain reaction may be triggered with devastating effects.
D、The transformation of the landscape in the United States.
答案
C
解析
事实题。题干提问NRDC报告中最担心的是什么。根据关键词NRDC reports定位到文章第一段末句和第三段第一句,由第三段得知气候变暖对国家公园某一地区的影响可能会导致连锁反应,并带来灾难性后果。be triggered with意为“被引发”。
转载请注明原文地址:https://tihaiku.com/zcyy/3483788.html
相关试题推荐
WilliamHenryGatesisAmericanbusinessexecutive,whoservesaschairmana
WilliamHenryGatesisAmericanbusinessexecutive,whoservesaschairmana
WilliamHenryGatesisAmericanbusinessexecutive,whoservesaschairmana
WilliamHenryGatesisAmericanbusinessexecutive,whoservesaschairmana
PublicEducationintheUnitedStatesisprogramsofinstruction【S1】______to
PublicEducationintheUnitedStatesisprogramsofinstruction【S1】______to
PublicEducationintheUnitedStatesisprogramsofinstruction【S1】______to
PublicEducationintheUnitedStatesisprogramsofinstruction【S1】______to
PublicEducationintheUnitedStatesisprogramsofinstruction【S1】______to
Intheearly1800’s,over80percentoftheUnitedStateslaborforcewasen
随机试题
[originaltext]Asweallknow,banksdochargefeesof$2or$3atatimeto
Itis(legal)______todobusinesslikethat,you’llbepunished.illegal这样做生意不合
HenryFordwasthemanwhofirststartedmakingcarsinlarge【B1】______.He
WhenMomandDadGrowOldA)Theprospectoftalkingtoincreasinglyfragil
某男,22岁。形体瘦弱,身高174cm.体重55kg,进食量大于常人,其属于A.
从保护存款人利益和增强银行体系安全性的角度出发,银行资本的核心功能是()。A
求助者的一般资料:王倩,女性,28岁,某国企出纳。 案例介绍:求助者半年以前
编制的审计工作底稿应当使未曾接触该项审计工作的有经验的专业人士清楚了解审计程序
票据和结算凭证金额以中文大写和阿拉伯数码同时记载,二者如果不一致的,以中文大写的
一、背景 一业主与施工单位就某工业大型管网安装工程签订了施工合同,合同中有以下
最新回复
(
0
)