首页
登录
职称英语
Working to Improve the Conditions of Everglades National Park A) When ma
Working to Improve the Conditions of Everglades National Park A) When ma
游客
2024-01-30
19
管理
问题
Working to Improve the Conditions of Everglades National Park
A) When many people think of Florida, images of sandy coastlines or theme park rides come to mind. But about an hour south of Miami lies a natural wilderness different from anywhere else in the United States. Everglades National Park is the largest subtropical wilderness in the country. The park is home to several rare and endangered species. It is also the third largest national park in the lower forty-eight states, after Death Valley and Yellowstone. More than one million people visit the Everglades each year.
B) The Everglades is considered one of the great biological wonders of the world. The expansive wetlands stretch across more than six hundred thousand hectares (公顷). It is a place where plants and animals from the Caribbean Sea share an ecosystem with native North American species. Unlike most other national parks, Everglades National Park was created to protect an ecosystem from damage. The Everglades is home to thirty-six species that are considered threatened or protected. They include the Florida panther, the American crocodile and the West Indian manatee. In addition, more than three hundred fifty bird species and three hundred species of fresh and saltwater fish live within the park. The Everglades is also home to forty species of mammals (哺乳动物) and fifty reptile (爬行动物) species.
C) Exotic plants can also be found in the Everglades. They include what is said to be the largest growth of mangrove trees in the western half of the world. Gumbo-limbo trees, known for their peeling red skin, strangler figs and royal palms are also among the area’s plant life. The Everglades is also home to the country’s largest living mahogany tree. Sawgrass grows in some areas of the park. Be careful—it is very sharp, with teeth just like a saw. It can grow up to four meters tall. With about one and one-half meters of rainfall each year, plants and trees never stop growing in the Everglades.
D) The dry, winter season is the favorite of most visitors, when insects like mosquitoes are less of a problem. The rainy season lasts from June to November. There are many ways to explore the Everglades. Visitors could see American crocodiles while hiking the Anhinga Trail. The Everglades is the only place on Earth where fresh water crocodiles and saltwater crocodiles live in the same area. Visitors using canoes or airboats are likely to see large groups of wading birds like the wood stork or great blue heron. It is even possible to see flamingos in the Everglades. This spring, Everglades National Park launched a visitation program to what was once a highly restricted military base. Park officials are working to recover a missile base used in the 1960s. The base played a Part In the nuclear tensions between the United States and the Soviet Union.
E) The government built the Florida base shortly after the discovery of Soviet missiles about three hundred kilometers away, on the island of Cuba. Tensions were high during the Cuban missile crisis. But missiles stored at the American base were never fired. The base was closed and all missile equipment was removed in the 1970s. Today only the buildings remain. This year, the historic area had many visitors, including former American service members who remember the missile crisis. The park hopes to offer more trips next spring, to help support the history for those who lived through it and for future generations.
F) Experts say changes to the Everglades are threatening several different kinds of wildlife. They say the threats are a result of actions the United States government began more than fifty years ago, and settlers began even earlier. The National Park Service says early colonial settlers and land developers thought the Everglades had little value. The settlers had plans to remove water from the area and in the 1880s developers began digging drain canals. At the time, they did not understand the complexity of the Everglades’ ecosystem. As a result, they were not prepared for all the work and caused environmental problems. The ecosystem, however, was able to survive.
G) Even larger efforts to drain the wetlands continued between 1905 and 1910. Large areas were changed to farmland. This led to increased development, with more people moving to the Everglades and also more visitors. More changes came in 1948, when Congress approved the Central and South Florida Project. As part of the plan, the Army Corps of Engineers built roads, canals and water-control systems throughout South Florida The aim of the project was to provide water and flood protection for developed areas and agriculture. Workers built a huge system of waterways and pumping stations to control the overflow of Lake Okeechobee, north of the Everglades. Today, fifty percent of south Florida’s early wetland areas no longer exist. Populations of wading birds have been reduced by ninety percent. Whole populations of animals are in danger of disappearing. The endangered creatures include the manatee, the Miami blackhead snake, the wood stork and the Florida panther.
H) In recent years, environmental experts have learned about the damage to the Everglades. They say the natural balance of plants and animals has been destroyed. Recently, the Obama administration promised three hundred sixty million dollars to pay for Everglades restoration this year. The administration is also asking that Congress approve an additional two hundred seventy-eight million dollars for next year. The money will help to support projects approved by the government nine years ago. The projects include improving wetlands in the Picayune Strand in Southwest Florida and repairs to Lake Okeechobee’s dam. Until now, the state of Florida has spent the most money on the project.
I) Another threat biologists have been battling for years in the Everglades is the area’s population of Burmese pythons (large snakes). Officials believe there are as many as one hundred fifty thousand of these large snakes in the Everglades. But the snakes are a foreign species, native to Southeast Asia Owners of pythons left their unwanted snakes in the Everglades years ago. Biologists say adult pythons are able to eat small deer and bobcats. When pythons are found in the Everglades, they are often killed. Scientists are now experimenting with other ways to remove the snakes, including trapping methods and offering payments to hunters. The future of the Everglades is not clear. However, efforts to protect the area are continuing so that people from all over the world may continue visiting this biological treasure. [br] The ecosystem of the Everglades was first threatened by actions of colonial settlers.
选项
答案
F
解析
根据题目中的ecosystem,threat及settlers可定位到F段。该段第2句提到美国政府和早期移民的活动都对the Everglades的生态造成了威胁,其中移民的活动所造成的威胁比美国政府来得更早,题目中的was first threatened by与这里的说法一致。
转载请注明原文地址:https://tihaiku.com/zcyy/3407960.html
相关试题推荐
[originaltext](16)AccordingtofiguresreleasedbyChina’sNationalBureau
Directions:Nowadays,althoughpeople’slivingstandardsimproved,manypeop
每逢寒暑假、节假日,总会出现“一票难求”的现象。Duringthesummerandwintervacations,andnationalhol
不久前,一条新的国际道路运输线路(transnationalhighway)开通。这条线路连接广西崇左市和越南下龙市(HaLongcity),长达
崇左市因其美丽的跨国瀑布(transnationalwaterfalls)和独具魅力的民族文化吸引了大量的游客。Chongzuoattractsagre
[originaltext]Asthenewsalesdirectortoranationalcomputerhrm,[16]Al
[originaltext]Twomonthsago,ZogbyInternational,aWashington-basedresea
PattyBaxterrealizedtherewasaproblem.In20years,herworkingofficeus
PattyBaxterrealizedtherewasaproblem.In20years,herworkingofficeus
PattyBaxterrealizedtherewasaproblem.In20years,herworkingofficeus
随机试题
地下矿山发生冒顶事故后,矿山救护队的主要任务是抢救遇险人员和()。A.减少损
重型肝炎与其他型肝炎的主要区别在于()A.黄疸明显 B.恶心呕吐明显
A.药物从用药部位进入血液循环的过程 B.药物在体内受酶系统或肠道菌丛的作用而
下边四个图形中,只有一个是由上边的四个图形拼合(只能通过上、下、左、右平移)而成
开展课外活动时,学生参加与否,不具有()。 A.自愿性B.灵活性,
患者,男,69岁,患糖尿病7年,无心悸、胸痛史。早餐后1小时,突然烦躁、面色苍白
农产品比价的计算方法包括( )。查看材料A.农产品单项比价 B.农产品综
根据我国《企业所得税法实施条例》,企业发生的职工福利费支出不超过()的14%的部
根据国家规定,总体规划草案报请审议批准的机构是()。A.本级人民政府 B.本级
基坑内地基加固的主要目的有()。A.减少围护结构位移 B.提高坑内土体强
最新回复
(
0
)