首页
登录
职称英语
We all know that it is possible for ordinary people to make their homes on t
We all know that it is possible for ordinary people to make their homes on t
游客
2024-01-18
35
管理
问题
We all know that it is possible for ordinary people to make their homes on the equator(赤道),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. 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. 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. [br] Aeroplanes usually do not need to climb quickly or fly high in the polar region because______.
选项
A、they do not land mere
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://tihaiku.com/zcyy/3372479.html
相关试题推荐
Manythings______almostimpossibleintheancienttimesareverycommontoday.A、
Fromherepeoplecanseethebridge______construction.A、belowB、byC、underD、on
Manypeoplebelievethatthebuildingshouldbe______intoaschool.A、changedB、a
Saltisasnecessarytolifeaswater.InmanyareasofAfricapeopleonced
Saltisasnecessarytolifeaswater.InmanyareasofAfricapeopleonced
Saltisasnecessarytolifeaswater.InmanyareasofAfricapeopleonced
Saltisasnecessarytolifeaswater.InmanyareasofAfricapeopleonced
电视节目对人们的影响很大,尤其是对儿童。Televisionprogramshaveagreatinfluenceonpeople,partic
Peoplehavewonderedforalongtimehowtheirpersonalitiesandbehaviorsa
Evenachildknowsthatnoddingheadmeans"Yes".ButsomepeopleWouldprob
随机试题
Shoppingforclothesisnotthesameexperienceforaman【C1】______isfor
Whatmadeithardfortherescueteamstoapproachtheearthquakezone?[origina
Thewordconservationhasathrifty(节俭)meaning.Toconserveistosaveand
[originaltext]Solarwaterheatingisusedworldwide.Thedeviceweareabou
D公司是一家小型家具制造商。已知该公司2020年销售收入2000万元,销售净利润
某孕妇现孕30周,长时间仰卧后,出现血压降低、心率加快、面色苍白等症状。出现这种
2012年,某省规模以上工业增加值10875亿元,比上年增长7.1%,月度增速从
关于社会工作的服务对象,下列描述中错误的是()。A.可以是个人,也可以是群体
房地产估价的主要方法不包括()。A、房地产估价的市场法 B、房地产估价的成本法
下列关于要约的说法错误的是( )。A.撤回要约的通知只能在要约到达受要约人之前
最新回复
(
0
)