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
Standing on the rim of the Grand Canyon(大峡谷), gazing across this giant would in the Earth’s surface, a visitor might assume that
Standing on the rim of the Grand Canyon(大峡谷), gazing across this giant would in the Earth’s surface, a visitor might assume that
admin
2013-05-13
37
问题
Standing on the rim of the Grand Canyon(大峡谷), gazing across this giant would in the Earth’s surface, a visitor might assume that the canyon had been caused by some ancient convulsing (震动). In fact, the events that produced the canyon, far from being sudden and catastrophic, simply add up to the slow and orderly process of erosion.
Many millions of years ago, the Colorado Plateau in the Grand Canyon area contained 1000 more feet of rock than it does today and was relatively level. The additional material consisted of some 14 layered formations of rock. In the Grand Canyon region these layers were largely worn away over the course of millions of years.
Approximately 65 million years ago the plateau’s flat surface in the Grand Canyon area bulged upward from internal pressure, geologists refer to this bulging actions upwading(弯 曲上升); it was followed by a general elevation of the whole Colorado Plateau, a process that is still going on. As the plateau gradually rose, shallow rivers that winded across it began to run more swiftly and cut more definite courses. One of these rivers, located east of the upward, was the ancestor of the Colorado. Another river system, called the Hualapai, flowing west of the upward, extended itself eastward by cutting back into the upward, it eventually connected with the ancient Colorado and captured its waters. The new river then began to carve out the 277-mile-long trench that eventually became the Grand Canyon. Geologists estimate that this initial cutting action began no earlier than 10 million years ago.
Since then, the Canyon forming has been cumulative. To the corrosive force of the river itself have been added other factors. Heat and cold, rain and snow, along with the varying resistance of the rocks, increase the opportunities for erosions. the Canyon walls crumble, the river acquires a cutting tool. Tons of debris, rainfall running off the high plateau creates feeder streams that carve side canyons. Pushing slowly backward into the plateau, the side canyons expose new rocks, and the pattern of erosion continues.
The word"wound"(Line 2, Para. 1)indicates that______.
选项
A、it was caused by some ancient convulsion
B、its presence is an embarrassment to the state of Colorado
C、it looks like an injury on the Earth’s surface
D、it has caused many visitors to injure themselves
答案
C
解析
本章开始说“站在大峡谷的边缘,放眼望着地球表面上的巨大豁口,游客可能认为峡谷是由于古代地动形成的。”可见作者在这里将大峡谷暗喻成伤口。故选[C]。
转载请注明原文地址:https://kaotiyun.com/show/TVjd777K
本试题收录于:
公共英语三级笔试题库公共英语(PETS)分类
0
公共英语三级笔试
公共英语(PETS)
相关试题推荐
ThefreeenterprisehasproducedatechnologycapableofprovidingtheAmericanconsumerwiththelargestandmostvariedmarket
Oneofthebest-knownproverbsmustbe"earlytobed,earlytorise,makesamanhealthy,wealthy,andwise."Thepromisesofhe
Text…【C1】______Thanksgivingturkey,it’shardtofind【C2】______"American"food.TheUnitedStatesisalandof【C3】______
Text…【C1】______Thanksgivingturkey,it’shardtofind【C2】______"American"food.TheUnitedStatesisalandof【C3】______
Text…【C1】______Thanksgivingturkey,it’shardtofind【C2】______"American"food.TheUnitedStatesisalandof【C3】______
Evenplantscanrunafever,especiallywhenthey’reunderattackbyinsectsordisease.Butunlikehumans,plantscanhavethe
Zoosareamongmankind’soldestinstitutions,datingbackatleast4,500years,andprobablymore.Acrosstheworldtheyhavebr
Zoosareamongmankind’soldestinstitutions,datingbackatleast4,500years,andprobablymore.Acrosstheworldtheyhavebr
Publicimage【C1】______tohowacompanyisviewedbyitscustomers,suppliers,andstock-holders,bythefinancialcommunity,by
随机试题
A.银杏叶B.麦冬C.五味子D.补骨脂E.骨碎补主要含有黄酮类成分的中药是()
法律风险评估要对风险控制计划的实施主体工作情况进行评价,主要从()指标予以衡量。
重商主义
以下各项中,对金融远期合约说法正确的是()。Ⅰ.交易可协商Ⅱ.存在对手违约风险Ⅲ.标准化合约Ⅳ.金融机构或大型工商企业常用的风险管理手段
关于外商投资企业采购国产设备退税的陈述,下列正确的是()。
游击队之歌的作者是()。
2011年10月11日,第八届全国残疾人运动会开幕式在杭州隆重举行。下列说法错误的是()。
抵押支持证券
函数重载是指()。
ItwasClark’sfirstvisittoLondonUndergroundRailway.Against【C1】______adviceofhisfriends,hedecidedtogothereafter
最新回复
(
0
)