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
2014-08-25
33
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 usually do not need to climb quickly or fly high in the polar region because ______.
选项
A、they do not land there
B、there are no clouds at all
C、they can cross the ice with special equipment
D、it is very cold
答案
B
解析
判断推理题,文中最后一句话说冷空气使云层也降低了,也就是说在高空是没有云的,所以选B。
转载请注明原文地址:https://kaotiyun.com/show/pLxO777K
0
成人本科学位英语
相关试题推荐
Iamquitefamiliar______herface,butIjustcannotrecallhername,
Oneofthequalitiesthatmostpeopleadmireinothersisthewillingnesstoadmitone’smistakes.(79)Itisextremelyhardsom
Weshouldtakegoodcareofoureyes______.Havingtwoeyesinsteadofoneisparticularlyusefulfor______.
Thepolicearesuspicious______hiswordsbecausehealreadyhasarecord.
Muchunfriendlyfeelingtowardscomputershasbeenbasedonthefearofwidespreadunemploymentresultingfromtheirintroductio
He(invited)me(togo)toaparty(and)Ididn’twantto(joinhim)thatevening.
Therealtrouble______theirlackofconfidenceintheirabilities.
Nonverbal(非语言的)communicationhastodowithgestures,movementsandclose-nessoftwopeoplewhentheyaretalking.Thescien
Languagesareremarkablycomplexandwonderfullycomplicatedorgansofculture.Theycontainthequickestandthemostefficient
随机试题
认为政治发展是社会发展的一个重要组成部分的是()。
长期大量应用糖皮质激素类药物可引起骨质疏松。()
实践中,国际融资担保存在多种不同的形式,如银行保函、备用信用证、浮动担保等,中国法律对其中一些担保形式没有相应的规定。根据国际惯例,关于各类融资担保,下列哪些选项是正确的?
依据《刑事诉讼法》及相关的规定,关于公安机关和检察机关之间监督与被监督关系,下列说法正确的有哪些选项?
某大型工程施工项目发生质量事故,造成20人死亡,直接经济损失为8000万元,此类事故为()。
某企业2013年流动资产平均余额为300万元,流动资产周转率为5次。若企业2014年净利润为600万元,则2014年营业净利率为()。
()是财政管理体制的主导环节,占有重要地位。
主要用于装裱书画和礼品装饰之用的是()。
非诺洛芬是一种治疗类风湿性关节炎的药物,可通过以下方法合成:请回答下列问题:非诺洛芬中的含氧官能团为_______和_______。(填名称)
拉美是一个奇幻的地方,很多在外界看来______的事情这里却经常发生,并被习以为常的拉美人以一种______、深信不疑的语气讲述出来,比如一个用钟摆摆动检测食品是否有毒的独裁者,一个为了消除瘟疫把全国的路灯用红纸包起来的卫生部长等等。填入划横线部分最恰当
最新回复
(
0
)