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
Famed for their high-elevation forests, the Appalachian Mountains sweep south from Quebec to Alabama. Highest in New England and
Famed for their high-elevation forests, the Appalachian Mountains sweep south from Quebec to Alabama. Highest in New England and
admin
2014-02-22
30
问题
Famed for their high-elevation forests, the Appalachian Mountains sweep south from Quebec to Alabama. Highest in New England and North Carolina, this broad system covers more than 1, 200 miles to form the rocky backbone of the eastern United States.
The Blue Ridge Mountains form a substantial part, 615 miles, of the far-reaching Appalachians. They begin as a narrow, low ridge in Pennsylvania, then slowly spread and rise until they reach the height of 5, 938 feet at majestic Grandfather Mountain in North Carolina. The Blue Ridge technically includes among its major spurs the Great Smoky Mountains and the Black Mountains; Mount Mitchell, in the latter range, is at 6, 684 feet the highest peak east of the Mississippi River. Like the rest of the Appalachians, these mountains were once substantially higher and bolder. Their uplift was completed some 289 million years ago, and they have been drastically eroded ever since. At one time, immense continental glaciers covered the land as far south as Pennsylvania. Although they did not spread over the Blue Ridge, plants and animals far beyond their reach became adapted to the cold. When the climate warmed and the ice melted, the cold-adapted species retreated northward, surviving in the south only at higher, cooler elevations.
Red Spruces and Fraser firs are remnants of the Ice Age, thriving in the higher elevations of the Blue Ridge; and local belches, birches, and red oaks are typical of forests farther to the north. Sharing the high peaks is another distinctive plant community. This is the "bald" — a treeless area covered with grass, or more commonly, with broad-leaved shrubs. Often large and vigorous, the latter include huckleberries, mountain laurel, and most especially, rhododendron, an evergreen shrub that blossoms in June and creates some of the most spectacular wild gardens on Earth.
Where in the passage does the author mention what has happened to the development of the mountains since they reached their highest point?
选项
A、The second sentence of Paragraph One.
B、The latter half of the second paragraph.
C、The first two sentences of Paragraph Two.
D、The whole Paragraph Two.
答案
B
解析
细节事实题。根据题干关键词the mountains…reached their highest point与原文第二段第五句中的their uplift was completed对应,据此定位答案,这句话其实跟问题的意思是一样的,就是说,这山的上升已经完成了,也就是达到顶峰了,从那以后,他们就开始被剧烈地侵蚀了。故答案为B。
转载请注明原文地址:https://kaotiyun.com/show/GHQO777K
0
考博英语
相关试题推荐
Consumersandproducersobviouslymakedecisionsthatmoldtheeconomy,butthereisathirdmajor【C1】______toconsidertherole
Consumersandproducersobviouslymakedecisionsthatmoldtheeconomy,butthereisathirdmajor【C1】______toconsidertherole
Consumersandproducersobviouslymakedecisionsthatmoldtheeconomy,butthereisathirdmajor【C1】______toconsidertherole
Consumersandproducersobviouslymakedecisionsthatmoldtheeconomy,butthereisathirdmajor【C1】______toconsidertherole
Consumersandproducersobviouslymakedecisionsthatmoldtheeconomy,butthereisathirdmajor【C1】______toconsidertherole
Consumersandproducersobviouslymakedecisionsthatmoldtheeconomy,butthereisathirdmajor【C1】______toconsidertherole
BritainandSpainhavethehighestproportionofcocaineusersintheEU,accordingtoapan-Europeandrugssurveypublishedtod
BritainandSpainhavethehighestproportionofcocaineusersintheEU,accordingtoapan-Europeandrugssurveypublishedtod
随机试题
下列选项中属于侵权人可以在诉前要求法院采取的措施的是()。
动脉粥样硬化时,泡沫细胞来源于
关于羊水过多,下列哪项是错误的
关于HLA-Ⅱ类抗原分子正确的是
患者,女性,50岁。患慢性迁延性肝炎二十余年,近一个月来感全身明显乏力、纳差、腹胀、腹泻而入院。入院时查体:面色灰暗、体形消瘦,皮肤巩膜轻度黄染,腹部膨隆,叩诊有移动性浊音。经确诊该患者已处于肝硬化失代偿期。该病人腹水形成的主要原因是
代理权行使的限制不包括()。
下面哪些疾病将影响在接受健康体检的受检人员领证的( )。
ABC会计师事务所负责审计甲公司20l1年度财务报表。在完成审计工作、形成审计结论时需要对审计工作底稿进行复核,以下说法不恰当的是()。
有如下程序:#includeusingnamespacestd;classSample{public:Sample(){)-Sample(){cout
Itiseasiertonegotiateinitialsalaryrequirementbecauseonceyouareinside,theorganizationalconstraints(约束)influencew
最新回复
(
0
)