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America's National Parks ( Part I ) The National Park Service of the U.S.A. controls more than 77 million acres of land, divided up into 320 park sites of extraordinary variety, the latest covering huge areas of wilderness in Alaska1. There are urban or city parks, there are ancient buildings and historic sites, seashore parks, national rivers, and more and more recreation areas where priority is given to the amusement of the public. Finally there are the National Parks themselves, which are visited by millions, but where the priority is conservation2. In a country of free enterprise3, where business interests are so powerful, these parks play an essential role. It was the conservationists who saved the remaining giant redwood trees and created the National Redwood Park, on the far side of the Golden Gate Bridge4 which spans the entrance to San Francisco Bay. The lumberjacks7 were so furious that they marched into the city to protest, shouting “No more parks!” But the environmentalists and conservationists have always been allowed to have their say in the “Land of the Free,”5 and their influence has been greater than in most countries. Yellowstone6, established by the U.S. Congress as a national park on March 1, 1872, is located primarily in the U.S. state of Wyoming, though it also extends into Montana and Idaho. Spanning an area of 3,468 square miles, the park was the first of its kind, and is known for its wildlife and its many geothermal features. Yellowstone has everything which appeals to the romantic, geysers7 which shoot jets of boiling water 200 feet up into the air, a deep canyon where a rushing river pours over mighty waterfalls. There are snowy mountain peaks, tree-fringed lakes and vast forests, as well as broad water meadows8, across which the Yellowstone River glides gently on its way to the canyon. On these meadows bison, elk, moose and deer9 come to graze in the evening. The park is the centerpiece of the Greater Yellowstone Ecosystem, the largest remaining, nearly intact ecosystem in the Earth’s northern temperate zone. American national parks represent one of the finest examples of nature conservation in the world. All the parks are kept as “natural” as possible. In the Far West10, lumbermen devastated whole forests. But no tree-felling is allowed in the parks. When a tree falls, it is left to rot and enrich the soil, and so encourage young trees to grow. Even natural forest fires, those not started by man, are allowed, in many parks, to burn themselves out. Animals learned years ago that man was not their enemy in the national parks. Many of them became so tame that they were a nuisance, and sometimes even a danger. Bears, in particular, lined the roads and begged for food. They were so comical that people stopped to feed them, thus breaking one of the strictest rules of the parks. This was not nature conservation! Cookies and candy are not part of a bear’s normal diet! There were also some unfortunate accidents, for even the fairly mild black bear cannot tell where the cookie ends and the hand begins. In Yellowstone, the bears have been taken miles away into the wilderness, but in a few other parks they are still a nuisance.
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【简答题】And some r ___________ there needs to be more research to determine what exactly gaming addiction is.
【简答题】诈病性自伤的特点是什么?
【多选题】导游人员在季节性台风地区带团时,遇到台风时应采取的措施有( )。
A.
收听到当地台风预报后,应征求领队与游客意见,确定旅游活动的行止
B.
在野外旅游时,听到台风即将到来的预报,应迅速带领旅游团返回
C.
如果在海边旅游时遇到台风,应迅速带领游客到远离海岸的坚固宾馆逃避
D.
旅游团正在旅游车内遇到台风时,应马上提醒司机将车开到坚固的隐蔽处
E.
收听到台风预报后,应与当地旅行社联系,变更旅游团的活动
【多选题】诈病性自伤的特点是:(    )
A.
故意的自伤行为
B.
带有明显欺骗性质
C.
企图达到特定目的的自伤行为
D.
诈病性自伤者常在自己身上弄一个伤口,造成组织缺损及疼痛效果
E.
将伤口展示于别人,以求激起对方情绪上的反应获得关注和同情
【简答题】诈病的特点是什么:
【多选题】In a lab, R1 connects to R2, which connects to R3. R1 and R2 each have several working interfaces, all assigned addresses in class A network 10.0.0.0. Router R3 has some working interfaces in class A ...
A.
auto - summary on R2 and no auto - summary on R3
B.
auto - summary on R2 and auto - summary on R3
C.
no auto -summary on R2 and no auto- summary on R3
D.
no auto - summary on  R2 and auto - summary on R3
【简答题】二年级三班的李东东是个很聪明的孩子,这是老师和同学们共同的看法。但是,他却是我最讨厌的学生——公认的多动症,爱动必然带来很多麻烦——杂乱的书桌、破损的作业本以及课上同学们的投诉。因此,他会经常得到我的“特别关照”——训斥或惩罚,但效果却并不见好。后来,我就对他“睁一只眼闭一只眼”,不再去管他。直到有一天,课上他答对了一个所有人都不懂的问题,我很恰当地表扬了他。课后,我又在他的作业本上写到:“你的智...
【单选题】With some men dressing down and some other men flaunting their looks, it is really hard to tell they are gay or ______
A.
straight
B.
homosexual
C.
beautiful
D.
sad
【简答题】Today’s festivals have many o____,some r____, some s____, and some for special people or s.
【判断题】不管懂不懂得自爱,人们都能很好的爱别人。()
A.
正确
B.
错误
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