首页
登录
职称英语
[originaltext] Men have been traveling across and around the equator on whee
[originaltext] Men have been traveling across and around the equator on whee
游客
2023-07-26
21
管理
问题
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 airplanes 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 had weather even at such heights as 18,000 or 20,000 meters.
Airplanes 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 airplane 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、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
细节题。关键句是if we are flying at a height to 5,000 meters above the Pole,is a delight…see a cloud in the sky as far as the eye can reach.
转载请注明原文地址:https://tihaiku.com/zcyy/2871578.html
相关试题推荐
[originaltext]CopenhagenhasbeenthecapitalofDenmarkfor600yearsand
[originaltext]Interviewer:What’sthenameofyourcompany?Interviewee:TheAt
[originaltext]Interviewer:What’sthenameofyourcompany?Interviewee:TheAt
[originaltext]M:Ineedtousemorethanjustmymathskillsforthesequestion
[originaltext]M:Ineedtousemorethanjustmymathskillsforthesequestion
[originaltext]Lastweekwediscussedtheproblemofrisingprices,or,int
[originaltext]Lastweekwediscussedtheproblemofrisingprices,or,int
[originaltext]Lastweekwediscussedtheproblemofrisingprices,or,int
[originaltext]M:Vicky!Haveyouheardthenews?W:No,Sam.Whatdoyoumean?
[originaltext]M:Vicky!Haveyouheardthenews?W:No,Sam.Whatdoyoumean?
随机试题
Thetransplantedtrees____________(可以抵御寒冷的天气).canberesistanttothecoldweat
Amassivepoolofwarmoceanwateriscausingchangesintheatmospherethat
Agronomistsareincreasinglyworriedabout“desertification,”thephenomenontha
Byandlarge,marriedpeopleappeartohavebetterhealththantheirsingle
女性,45岁。肥胖多年,口渴5个月,糖化血红蛋白7%~9%,空腹血糖7.9mmo
有“天然水果罐头”之称的是( )。A.荔枝 B.沙田柚 C.芒果 D.黄
关于汽车库、修车库防烟排烟的设置要求,叙述正确的有()。A.设置通风系统的汽车
下列建设工程,建设单位应当向住房和城乡建设主管部门申请消防设计审核,并在建设工程
关于变电站中继电保护和自动装置的控制电缆,下列正确的选项有哪些?()A.控制电
患儿为8岁农村男孩,因"突起高热3天,昏迷、抽搐1天"于本年8月3日入院。现体温
最新回复
(
0
)