首页
登录
职称英语
We all know that it is possible for ordinary people to make their homes o
We all know that it is possible for ordinary people to make their homes o
游客
2025-02-28
39
管理
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. [br] 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:http://tihaiku.com/zcyy/3975831.html
相关试题推荐
Weallknowthatitispossibleforordinarypeopletomaketheirhomeso
Weallknowthatitispossibleforordinarypeopletomaketheirhomeso
Iaskedthesoldierwhathewasin______________life.A、ordinaryB、dailyC、common
Stupidpeopleoftenfinditdifficultto_________theirprejudices.A、giveinB、gi
Notalways___________theywantto.A、peoplecandowhatB、peoplecannotdowhatC
TheannualcampaigntomakeSingapore’sthreemillionpeoplemorepolite
TheannualcampaigntomakeSingapore’sthreemillionpeoplemorepolite
TheannualcampaigntomakeSingapore’sthreemillionpeoplemorepolite
Fiftyyearsago,wealthypeoplelikedhuntingwildanimalsforfun____________si
________,worksongsoftenexhibitthesongcultureofapeopleinafundamental
随机试题
Whatisthenewsmainlyabout?[originaltext]EnglishpremierleagueclubMan
[originaltext]M:Weren’tyougoingtoconfirmyourbookingatthehotel?W:You
Whenyouhavetomeetsomeonefromadifferentculture,beprepared.Ifyou
Thispartistotestyourabilitytodopracticalwriting.Youarerequiredtow
我国社会保障体系的基本内容包括:A.社会救助 B.社会福利 C.社会保险
PROM可多次改写。
关于抗震设计的高层框架结构房屋结构布置的说法,正确的是:()A.框架应设计成
2014年4月1日,程某首次就业即到甲公司工作。2017年6月25日
紧缩性财政政策的主要手段是()。A.减税、增加财政支出 B.减税、减少财政支
金属铸造是将熔融的金属注入、压入或吸人铸模的空腔中使之成型的加工方法。铸造作业中
最新回复
(
0
)