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
The Gulf Stream, which runs like a friendly blue river across the cold green Atlantic Ocean, is one of the mightiest powers in t
The Gulf Stream, which runs like a friendly blue river across the cold green Atlantic Ocean, is one of the mightiest powers in t
admin
2013-05-29
44
问题
The Gulf Stream, which runs like a friendly blue river across the cold green Atlantic Ocean, is one of the mightiest powers in the worlD. By comparison, the Mississippi and the mighty Amazon are but small rivers. Two million tons of coal burned every minute would not equal the heat that the Stream gives forth in its Atlantic crossing. Without the Stream’s warmth England’s pleasant green countryside would be as cold as Labrador, which is no farther north than EnglanD. If this "river of blue" were cooled as much as 15 degrees, England, Scandinavia, northern France and Germany would probably become a region for the Eskimos.
The general course of the blue river has never been known to change. From Florida north the Stream follows the curve of the coast but stays well away from the shore. When the warm waters meet the icy Labrador currents, the Stream loses some speed and heat, but even with icebergs at its margin it stays warm enough for tropical sea life.
As the Stream nears Europe it divides north and south. The northern drift mixed with the Arctic Ocean. The southern drift comes again into the path of Africa’s hot trade winds, and the waters hurry back to the Gulf of Mexico, gathering again their store of heat. The complete course of the Stream, therefore, is like a tremendous 12,000-mile whirlpool.
Scientists think that it takes three years for the Stream to make a complete trip. Their belief is based on the courses of bottles that have been thrown into the Stream to drift. These bottles contain papers, printed in many languages, requesting the finders to note the places and dates of finding and mail them back. Government experts on ocean currents have records of thousands of there "bottle papers".
Other oceans have such currents. In the North Pacific, for example, the Japanese Current makes the climate of coastal Alaska and America’s west coast milD. Science is still not satisfied with what it knows about these currents. But for most of us it is enough to know that the Gulf Stream and similar currents give warmth to countries that would otherwise be very cold indeed.
Scientists have used papers in bottles to determine the number of______.
选项
A、beliefs about the experiments of the bottles
B、languages spoken along the course of the Gulf Stream
C、years needed for the Stream to make a complete trip
D、similar currents that have not yet been found
答案
C
解析
文章倒数第二段中提到:Scientists think that it takes three years for the Stream to make a complete trip.Their belief is based on the courses of bottles that have been thrown into the Stream to drift.“科学家们认为墨西哥湾暖流循环一次需要3年时间,这一结论是靠往暖流里投放塞着纸条的瓶子得出的”。因此,本题应选C。
转载请注明原文地址:https://kaotiyun.com/show/AEHO777K
0
研究生英语学位课统考(GET)
相关试题推荐
Whyaresomanypeopleunhappyintheirjobs?Therearetwoprimaryreasons.First,somepeopleareconvincedthatearningaliv
Thereasonwhyhedidn’ttaketheexamwas______hehadanaccidentonhiswaytotheschool.
Openupmostfashionmagazinesandyouwillseeincrediblythinmodelswithimpossiblehairandwearingunreasonablyexpensive,
Openupmostfashionmagazinesandyouwillseeincrediblythinmodelswithimpossiblehairandwearingunreasonablyexpensive,
Giventheadvantageofelectronicmoney,youmightthinkthatweshouldmovequicklytothecashlesssocietyinwhichallpaymen
Thechildrenprefercampinginthemountains______anindooractivity.
Iamsurprised______thiscityisadullplacetolivein.
Agreatdealofattentionisbeingpaidtodaytotheso-calleddigitaldivide—thedivisionoftheworldintotheinfo(informatio
Whenaneight-lanesteel-truss-archbridgeacrosstheMississippiRiverinMinneapoliscollapsedduringtheeveningrushhouron
AreportconsistentlybroughtbackbyvisitorstotheU.S.ishowfriendly,courteous,andhelpfulmostAmericansweretothem.
随机试题
具体劳动和抽象劳动是()。
复制过程中具有催化3’,5’-磷酸二酯键生成的酶有
A.双泡征B.太空衣征C.香蕉小脑征D.蛙眼征E.草莓头征胎儿十二指肠闭锁
A、从事医师执业活动B、中止医师执业活动C、申请执业医师注册D、不予医师执业注册E、注销执业医师注册受吊销医师执业证书行政处罚,自处罚之日起不满2年的
急性期脑血栓形成患者用低分子右旋糖酐治疗的原理是
A、黄芪B、大血藤C、莪术D、麦冬E、鸡血藤饮片切面显车轮纹的药材为
遥感技术是建立在物体()理论基础上的。
高压阀门应逐个进行强度和严密性试验。强度试验压力等于阀门公称压力的()倍,严密性试验压力等于公称压力的()倍。
我国第六次人口普查(2010年)数据显示,离开户口登记地在居住地居住半年以上的人口为26139万人,比2000年增11700万人;东部沿海地区的人口占全国总人口的比重上升。出现该现象的主要原因是()。
Allsocialanimalscommunicatewitheachother,frombeesandantstowhalesandapes,butonlyhumanshavedevelopedalangua
最新回复
(
0
)