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
We all know that it is possible for ordinary people to make their homes on the equator (道), although often they may feel uncomfo
We all know that it is possible for ordinary people to make their homes on the equator (道), although often they may feel uncomfo
admin
2014-03-13
86
问题
We all know that it is possible for ordinary people to make their homes on the equator (道), although often they may feel uncomfortably hot there. Millions do it. But as for the North Pole (北极)——we know that it is not only a dangerously cold place, but that people like you and I would find it quite impossible to live there. At the present time only the scientists and explorers can do so, and they use special equipment. (76) Men have been travelling across and around the equator on wheels, on their feet or in ships for thousands of years; but only a few men, with great difficulty and in very recent time, have ever crossed the ice to the North Pole. So it may surprise you to learn that, when traveling by air, it is really safer to fly over the North Pole than over the equator. Of course, it is not true about landings in the polar region, but the weather, if we are flying at a height of 5,000 meters above the Pole is a delight. At 4,000 meters and move above the earth you can always be sure that you will not see a cloud in the sky as far as your eyes can reach. In the tropics (热带), on the other hand, you are not certain to keep clear of bad weather even at such heights as 18,000 or 20,000 meters.
Aeroplanes can’t climb as high or as quickly in cold air as in warm. Nor can clouds. (77) In practice, this is an advantage to the aeroplane, which is already at a good height when it reaches the polar region and so does not to climb,while at the same time cold air keeps the clouds down low.
Aeroplanes can climb quickly ______
选项
A、in warm air
B、in cold air
C、when it reaches the polar region
D、only when the clouds are down low ______
答案
A
解析
事实细节题。第二段第一句话可知,飞机在冷空气里不如在热空气里飞的高和快。所以选A。
转载请注明原文地址:https://kaotiyun.com/show/F4DO777K
0
成人本科学位英语
相关试题推荐
Alanguageisasignalingsystemwhichoperateswithsymbolicvocalsounds,andwhichisusedbyagroupofpeopleforthepurpo
Man:Thetrainwassupposedtoarriveat9o’clock.Woman:Nineo’clock!Butit’salready9:30.Question:Whatdoesthewomanm
IntheUnitedStates,thefirstdaynurserywasopenedin1854.Nurserieswereestablishedinvariousareasduringthe【C1】______
SpeakerA:DoyoumindifIopenthewindow?SpeakerB:______
CarmenAraceMiddleSchoolissituatedinthepastoraltownofBloomfield,Connecticut,butfouryearsagoitfacedmanyofthe
Whichofthefollowingwouldbethebesttitleforthepassage?Theword"real"inthelastparagraphmaymostprobablymean___
Fromtheverybeginning,theauthorputsitclearlythatactingisaprofession______.WhichofthefollowingisNOTmentioned
Weliveinatime______,morethaneverbeforeinhistory,peoplearemoving.
这首诗太难,这个孩子领会不了。
他今天早上又迟到了,昨晚他肯定是睡得太晚了。
随机试题
自2012年年初以来,A公司出现不能清偿到期债务且资产不足清偿全部债务的情况。2012年12月l7日,人民法院经审查裁定受理了A公司的破产申请,并指定了管理人。在该破产案件中,存在下述情况:(1)2011年10月8日,B公司向C银行借款1000万元,期
Wits值用于分析
患者,女性,33岁,停经8个月,第一胎,阴道大量流血3小时入院。出血时不伴有腹痛及阴道流水。既往有2次人流史,药物流产1次。查体:P120次/分,BP87/56mmHg,神清,轻度贫血貌,宫高30cm,腹围95cm,胎位LSA,FHR150次/分。患者
[2010年,第86题]在电动机的继电接触控制电路中,具有短路保护、过载保护、欠压保护和行程保护,其中,需要同时接在主电路和控制电路的保护电器是()。
同时放散热、蒸汽和有害气体,或仅放散密度比空气小的有害气体的工业建筑,除设局部排风外,宜在上部区域进行自然或机械的全面排风,其排风量设计()。
呆账发生后的处理原则包括()。
下列各项说法中,正确的有()。
科学家们发现,一种曾在美洲普遍栽培的经济作物比目前的主食作物如大米和小麦,含有更高的蛋白质成分。科学家们宣称,推广这种作物,对那些人口稠密、人均卡路里和蛋白质摄入量均不足的国家是很有利的。下列哪项如果为真,最能对科学家的宣称产生质疑?
在人类历史上,原始社会的经济关系产生了原始共产主义道德,封建社会的经济关系产生了封建主义道德,资本主义社会的经济关系产生了资本主义道德,社会主义社会的经济关系产生了社会主义道德。这说明()
DictationListentothepassage.Forquestions21~25,fillintheblankswiththeexactwordsorphrasesyouhear.Therei
最新回复
(
0
)