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
47
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
A、Itisbasedonalotofresearch.B、Itcanbefinishedinafewweeks’time.C、Ithasdrawncriticismfromlotsofpeople.D、I
Newtechnologylinkstheworldasneverbefore.Ourplanethas【B1】______.It’snowa"globalvillage"wherecountriesareonlys
Ahappymarriageapparentlyisgoodmedicine,buthostilespousesmay【B1】______oneanother’shealth.Couplesinconflict-ridden
A、Smallcompanies.B、Industrialists.C、Tradeunions.D、TheyoungergenerationB细节题。短文提到,工业家们并不反对政府这些计划,他们承认,缩减工作时间会帮助他们减少成本。由此可推
A、Writeanoutline.B、Havearehearsal.C、Meethissupervisor.D、Workathisoffice.C男士说,晚上约了导师讨论论文提纲。故C为答案。选项涉及四个不同的行为,因此要注意听问
JustlikeChinese,Westernersgivegiftsonmanyoccasions,suchas,onbirthdaysoffamilymembers,atweddings,atChristmasa
CPI是居民消费价格指数(consumerpriceindex)的简称,可以反映居民购买消费品及服务的价格变动。它不但与人们的生活密切相关,在国家的价格体系中也占有很重要的地位。中国的CPI涵盖居民生活中所消费的食品、服装、医疗和教育等8大类、262种
农民工(migrantworkers)指在城市中从事非农业工作的农业户口(agricultural—registeredresidence)工人。2013年中国的农民工总数达到2.63亿,他们主要就职于建筑业、第三产业和劳动力密集型产业(laborin
西安,古称长安,是著名的古都,也是中华文明的发祥地。它断断续续作为13个王朝的首都达1200多年之久。西安是中国古代第一个对外开放的城市。汉唐时期,它是中国政治、经济、文化和对外交流的中心。西安有很多珍贵的文物和遗址。秦始皇兵马俑(theTerra-co
RainforestCity[A]Apatchoftropicalrainforesthastwicethenumberofmammalspecies,fivetimesthebatsandbirdsandten
随机试题
A、双端固定桥B、种植体固定桥C、应力中断式固定桥D、复合固定桥E、粘结固定桥一侧用种植体作基牙的固定桥称为
《药品管理法》明确规定国家实行中药品种保护制度,国务院于1992年10月14日发布《中药品种保护条例》,自1993年1月1日起施行。在《中药品种保护条例》的规定中,国家鼓励研制开发临床有效的中药品种,对质量稳定、疗效确切的中药品种实行分级保护制度。《中
投资者可以控制的风险包括()。
【背景资料】某矿井采用立井开拓,主、副井井筒位于同一工业广场,主井井筒采用临时井架凿井,副井井筒采用永久井架凿井。主、副井井筒段采用冻结法施工,基岩段采用普通法施工。井筒基岩段预计涌水量8m3h。主、副井井筒冻结及掘砌施工由某施工单位承担。该施工
建筑施工企业安全生产管理工作中,()是清除隐患、防止事故、改善劳动条件的重要手段。
关于自理报检单位的权利,以下表述错误的是()。
张某是甲期货公司的副总经理,李某是该公司的客户。甲期货公司指派张某为李某提供交易服务。后张某离职到了乙期货公司工作,但甲期货公司和张某都没有将此情况告知李某。李某继续在甲期货公司交易,并继续把下达的指令交给张某,而张某并没有把收到的指令交回甲期货公司,导致
微信、微小说、微视频、微博等“微文化”悄然兴起,有人称为“微时代”,“微”似乎成了现代人尤其是年轻人的一种生活态度。从微博、微小说到微信,无不彰显“微文化”成为人们日常生活的有机组成部分。微电影正是在“微文化”“微时代”的背景下应运而生,其流行、传播的速度
改革开放是一场新的伟大革命,是社会主义制度的自我完善和发展。党领导的改革开放实现了目的和效果的统一,为我们提供了必须倍加珍惜和自觉运用的宝贵经验,其中有
下列度量单位中,用来度量计算机内存空间大小的是()。
最新回复
(
0
)