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, although often they may feel uncomfortab
We all know that it is possible for ordinary people to make their homes on the equator, although often they may feel uncomfortab
admin
2021-04-29
55
问题
We all know that it is possible for ordinary people to make their homes on the equator, although often they may feel uncomfortably hot there. Millions do it. But as for the North Pole—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. 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 travelling 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, 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. 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 need to climb, while at the same time cold air keeps the clouds down low.
It is a delight to fly at the Pole because there___________.
选项
A、planes fly higher than at the equator
B、the eyes can reach about 4,000 meters
C、planes are clear of bad weather
D、planes fly more quickly than at the equator
答案
C
解析
根据文章第一段最后两句“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, 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.”可推知,在热带上空不能确保不会遇到坏天气,而在北极上空的情况与之相反,故选C。
转载请注明原文地址:https://kaotiyun.com/show/LmtO777K
0
成人本科学位英语
相关试题推荐
Doyouknowinsurance(保险)?Buyinginsuranceisameansbywhichpeoplecanprotectthemselves【C1】______largelosses.Protection
Firecanhelppeopleinmanyways.Butitcanbeverydangerous.Firecanheatwater,warmhouses,givelightandcook.Butfire
Firecanhelppeopleinmanyways.Butitcanbeverydangerous.Firecanheatwater,warmhouses,givelightandcook.Butfire
Increasingly,overthepasttenyears,people—especiallyyoungpeople—havebecomeawareoftheneedtochangetheireatinghabit
Alawyerfriendofminehasdevotedherselftotheserviceofhumanity.Herspecialareaiscalled"publicinterestlaw".M
Advertisementcanbethoughtof"asthemeansofmakingknowninordertobuyorsellgoodsorservices".Advertisementaimst
Advertisementcanbethoughtof"asthemeansofmakingknowninordertobuyorsellgoodsorservices".Advertisementaimst
随机试题
监理单位的资质根据其人员素质、专业技能、管理水平、资金数量及实际业绩分为()。
不论是双面焊,还是单面焊,只要是同一种材料,其弯曲试验的弯曲角度都是一样的。()
A/禁食B/软食C/半卧位D/中凹卧位E/侧卧位女性,41岁,胃溃疡急性穿孔术后,应取的卧位是
医生在医患关系中履行的义务不包括
生物科技和医疗技术的不断发展,使器官移植成为延续人的生命的一种手段。近年来,我国一些专家呼吁对器官移植进行立法、对器官捐献和移植进行规范。对此,下列哪种说法是正确的?()
会计核算的一般原则中,亦称为有用性原则的是( )。
唯才是用,这是企业经营制胜的必要条件,因而,伯乐如何识千里马,是主管人员在事事讲求团体效率中必须具备的基本功夫。伯乐何以能“识”千里马,有靠直觉的,有靠经验的,同样的,主管遴选人才,也是靠直觉、靠经验。然而,经验的判断常常流于主观。所以,( )。
关于假设检验和区间估计之间的关系,下列说法正确的是()
TheSeattleTimesCompanyisonenewspaperfirmthathasrecognizedtheneedforchangeanddonesomethingaboutit.Inthenew
A、SkiinCalifornia.B、Teachthemantoski.C、VisitherfriendsinEurope.D、Staywiththeman’sfamily.D男士说“你可以在我那里过圣诞节”,女士表示
最新回复
(
0
)