首页
登录
职称英语
[originaltext] We all know that it is possible for ordinary people to make t
[originaltext] We all know that it is possible for ordinary people to make t
游客
2023-08-02
78
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 me 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 traveling 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, this is not true about landings in the polar region(which passenger airplane do not make), 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 more above the earth you can always be sure that you will not see a cloud in the sky as far as the eye 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 metres.
Aeroplane 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 aero plane, 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.
选项
A、Because there planes fly higher than at the equator.
B、Because there the eyes can reach about 4,000 metres.
C、Because there planes are clear of bad weather.
D、Because there planes fly more quickly than at the equator.
答案
C
解析
Why is it a delight to fly at the Pole?
转载请注明原文地址:https://tihaiku.com/zcyy/2889651.html
相关试题推荐
[originaltext]Smartphonesdistractattentionandreducelearningbecauseof
[originaltext]Smartphonesdistractattentionandreducelearningbecauseof
[originaltext]Goodafternoon.Intoday’slecture,we’llbetalkingaboutho
[originaltext]InAmerica,mostresearchersconcedethatboysandgirlsare
[originaltext]InAmerica,mostresearchersconcedethatboysandgirlsare
[originaltext]Everyoneissupposedtocheerforgoodguys,andweshouldon
[originaltext]Everyoneissupposedtocheerforgoodguys,andweshouldon
[originaltext]Everyoneissupposedtocheerforgoodguys,andweshouldon
[originaltext]Anewstudyhasfoundapositivecorrelationbetweenhowmuch
[originaltext]M:Hi,there!I’vecometoseetheflat.MynameisMarkAdams.W
随机试题
In1609Galileobuiltthefirsttelescope,______heusedtodiscoverthefourla
[originaltext]W:Well,Mr.Smith,I’velookedintoyourinvoiceandfoundoutw
关于高血压病的叙述,错误的是()。A.有明显的遗传倾向 B.高钠饮食与发病有
车道车辆检测器计数精度偏差为≤0.1%,实测方法为人工记数核对,要大于()。A
患者,男,40岁。心悸而烦,失眠多梦,伴有梦遗,舌红苔少,脉细数。宜首选的药组是
债券的( )是指债券可以随时变现的性质,反映债券规避由市场价格波动而导致的实际
各种运输方式内外部的各个方面的构成和联系,就是( )。 A.运输系统
职工因工外出期间发生事故或者在抢险救灾中下落不明的,从事故发生当月起( )内照
开口初期或开口初、闭口末弹响是哪种关节病的主要症状?( )A.关节器质性改变
根据SWOT分析法,当企业外部存在机会,且内部具有优势时,应当采用的战略为(
最新回复
(
0
)