首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Deer Populations of the Puget Sound A) Two species of deer have been prevalent in the Puget Sound area of Washington State in th
Deer Populations of the Puget Sound A) Two species of deer have been prevalent in the Puget Sound area of Washington State in th
admin
2017-03-01
28
问题
Deer Populations of the Puget Sound
A) Two species of deer have been prevalent in the Puget Sound area of Washington State in the Pacific Northwest of the United States. The black-tailed deer, lowland, west-side cousin of the mule deer of eastern Washington, is now the most common. The other species, the Columbian white-tailed deer, in earlier times was common in the open prairie country, it is now restricted to the low, marshy islands and flood plains along the lower Columbia River.
B) Nearly any kind of plant of the forest understory can be part of a deer’s diet. Where the forest inhibits the growth of grass and other meadow plants, the black-tailed deer browses on huckleberry, salal, dogwood , and almost any other shrub or herb. But this is fair-weather feeding. What keeps the black-tailed deer alive in the harsher seasons of plant decay and dormancy? One compensation for not hibernating is the built-in urge to migrate. Deer may move from high-elevation browse areas in summer down to the lowland areas in late fall. Even with snow on the ground, the high bushy understory is exposed; also snow and wind bring down leafy branches of cedar, hemlock, red alder, and other arboreal fodder.
C) The numbers of deer have fluctuated markedly since the entry of Europeans into Puget Sound country. The early explorers and settlers told of abundant deer in the early 1800s and yet almost in the same breath bemoaned the lack of this succulent game animal. Famous explorers of the north American frontier , Lewis and Clark had experienced great difficulty finding game west of the Rockies and not until the second of December did they kill their first elk. To keep 40 people alive that winter, they consumed approximately 150 elk and 20 deer. And when game moved out of the lowlands in early spring, the expedition decided to return east rather than face possible starvation. Later on in the early years of the nineteenth century, when Fort Vancouver became the headquarters of the Hudson’s Bay Company, deer populations continued to fluctuate. David Douglas, Scottish botanical explorer of the 1830s found a disturbing change in the animal life around the fort during the period between his first visit in 1825 and his final contact with the fort in 1832. A recent Douglas biographer states; "The deer which once picturesquely dotted the meadows around the fort were gone (in 1832), hunted to extermination in order to protect the crops."
D) Reduction in numbers of game should have boded ill for their survival in later times. A worsening of the plight of deer was to be expected as settlers encroached on the land, logging, burning, and clearing, eventually replacing a wilderness landscape with roads, cities, towns, and factories. No doubt the numbers of deer declined still further. Recall the fate of the Columbian white-tailed deer, now in a protected status.
E) But for the black-tailed deer, human pressure has had just the opposite effect. Wild life zoologist Hulmut Buechner (1953), in reviewing the nature of biotic changes in Washington through recorded time, Says that "since the early 1940s, the state has had more deer than at any other time in its history, the winter population fluctuating around approximately 320,000 deer (mule and black-tailed deer), which will yield about 65,000 of either sex and any age annually for an indefinite period. "
F) The causes of this population rebound are consequences of other human actions. First, the major predators of deer—wolves, cougar, and lynx—have been greatly reduced in numbers. Second, conservation has been insured by limiting times for and types of hunting. But the most profound reason for the restoration of high population numbers has been the gate of the forests. Great tracts of lowland country deforested by logging, fire, or both have become ideal feeding grounds of deer.
G) In addition to finding an increase of suitable browse, like huckleberry and vine maple, Arthur Einarsen, longtime game biologist in the Pacific Northwest, found quality of browse in the open areas to be substantially more nutritive. The protein content of shade-grown vegetation, for example, was much lower than that for plants grown in clearings.
H) Deer are the ruminant mammals forming the family Cervidae. Species in the family include white-tailed deer, mule deer such as black-tailed deer, elk, moose, red deer, reindeer (caribou), fallow deer, roe deer and chital.
I) Male deer of all species (except the Chinese water deer) and also female reindeer grow and shed new antlers each year. In this they differ from permanently horned animals such as antelope; these are in the same order as deer and may bear a superficial resemblance. The musk deer of Asia and water chevrotain (or mouse deer) of tropical African and Asian forests are not usually regarded as true deer and form their own families, Moschidae and Tragulidae, respectively.
J) Deer are widely distributed, with indigenous representatives in all continents except Antarctica and Australia, though Africa has only one native species, the red deer, confined to the Atlas Mountains in the northwest of the continent. However, fallow deer have been introduced to South Africa.
K) Deer live in a variety of biomes ranging from tundra to the tropical rainforest. While often associated with forests, many deer are ecotone species that live in transitional areas between forests and thickets (for cover) and prairie and savanna (open space).
L) The majority of large deer species inhabit temperate mixed forest, mountain mixed coniferous forest, tropical seasonal/dry forest, and savanna habitats around the world. Clearing open areas within forests to some extent may actually benefit deer populations by exposing the understory and allowing the types of grasses, weeds, and herbs to grow that deer like to eat.
M) Additionally, access to adjacent croplands may also benefit deer. However, adequate forest or plants must still be provided for populations to grow and thrive.
N) Small species of brocket deer and pudus of Central and South America, and muntjacs of Asia generally occupy dense forests and are less often seen in open spaces, with the possible exception of the Indian Muntjac.
O) There are also several species of deer that are highly specialized, and live almost exclusively in mountains, grasslands, swamps, and "wet" savannas, or riparian corridors surrounded by deserts. Some deer have a circumpolar distribution in both North America and Eurasia.
The places where the majority of large deer species inhabit are temperate mixed forest, mountain mixed coniferous forest, tropical seasonal/dry forest, and savanna habitats around the world.
选项
答案
L
解析
句式转换题。根据tropical seasonal/dry forest定位到L)段第一句,原句是:The majority of large deer species inhabit temperate mixed forest,mountain mixed coniferous forest,tropical seasonal/dry forest,and savanna habitats around the world.从原句的主谓结构变成了题干的主系表结构。
转载请注明原文地址:https://kaotiyun.com/show/MFU7777K
0
大学英语六级
相关试题推荐
Amanstepsonwhatseemslikesolidgroundbutdiscoverswithhorrorthatthegroundisgivingwaybeneathhisfeet.Themanst
A、Nomedicinecouldsolvethewoman’sproblem.B、Thewomanshouldeatlesstolosesomeweight.C、Nothingcouldhelpthewomani
Mostpeopledon’twakeupinthemorning,combtheirhair,andwalkoutthefrontdoorandontotheworldstage.ButBritain’sP
A、Manyofherbooksarebestsellers.B、Sheisashrewdbookstoreowner.C、Sheispromotingherbookinperson.D、Sheisasalesp
July11Ileftonmytriptoday.Havingbeenoverseasbefore,Ifeltsomewhatateasewiththeideaoftraveling【B1】______.
A、Gardeningandlandscaping.B、Retailing.C、Financing.D、Child-care.A在听到前文的gardeningandlandscaping时应竖起耳朵听其下文,接着又听到表示最高级信息的req
A、Popmusic.B、Classicalmusic.C、Folkmusic.D、Allkindsofmusic.B男士说了自己三个阶段分别喜爱的音乐,最后提到的“古典音乐”是现在的情况,问题用的是一般现在时,所以答案为B。选项告诉我
黄河(theYellowRiver)全长约5464公里,是中国的第二长河,仅次于长江(theYangtzeRiver)。黄河发源于青海省,流经9个省和自治区,最后注入渤海(theBohaiSea)。黄河流域(basin)是中国古代文明的发祥地,
A、Acleverclogknowseverythingintheworld.B、Allthelivingcreatureshavethesameancestor.C、Naturemakessomespeciesch
A、Humansgothelpfromotherspecies.B、Humanssurvivebyexploration.C、Humanssurvivebyingenuity.D、Humanssurvivebyluck.
随机试题
五笔字型汉字输入法的编码属于________________。
下列何药善治肝肾亏损胎动不安
下列哪一种防水涂料不能用于清水池内壁作防水层?[1999年第120题]
沾化、无棣因盛产冬枣和金丝小枣而享有“中国枣乡”之名。()
图书变动成本的特性有()。
计算机内部采用二进制表示数据信息,二进制主要优点是()。
回调(Callback)函数是面向过程的程序设计语言中常用的一种机制。在设计模式中,(45)模式就是回调机制的一个面向对象的替代品。
Whatinformationdidthemanhearfromthebroadcast?
HowtoTakeaJobInterviewTosucceedincampusjobinterviews,youhavetoknowwherethatrecruiteriscomingfrom.Thes
A、Johnandhiscousin.B、Susan.C、John’scousin.D、Susan’scousin.C此题为明示题。男士的表妹要来,而男士的名字是John,故答案为C。
最新回复
(
0
)