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 (道), although often they may feel uncomfo
We all know that it is possible for ordinary people to make their homes on the equator (道), although often they may feel uncomfo
admin
2014-03-13
95
问题
We all know that it is possible for ordinary people to make their homes on the equator (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. (76) 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. (77) 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.
Aeroplanes usually do not need to climb quickly or fly high in the polar region because ______.
选项
A、they do not land there
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://kaotiyun.com/show/G4DO777K
0
成人本科学位英语
相关试题推荐
Theairispolluted.Theearthispoisoned.Waterisunsafetodrinkandrubbishisburyingthecivilizationthatproducedit.
Peoplespeakof"push"and"pull"factorsconcerningmigration.Pushfactorsareassociatedwiththeplaceoforigin.Itcouldb
IntheUnitedStates,thefirstdaynurserywasopenedin1854.Nurserieswereestablishedinvariousareasduringthe【C1】______
SpeakerA:I’dliketoseethebluejacketinthewindow.SpeakerB:______
CarmenAraceMiddleSchoolissituatedinthepastoraltownofBloomfield,Connecticut,butfouryearsagoitfacedmanyofthe
这首诗太难,这个孩子领会不了。
Weoftenprovideourchildrenwithtoys,footballsorbasketballs,______thatallchildrenlikethesethings.
他认为我们不应该再在这个问题上多花时间了。
他连自己都养不活,更别说养家了。
随机试题
申请人甲于2015年3月1日向国家知识产权局提出一件发明专利申请,并要求两项外国优先权,优先权日分别为2014年3月1日和2014年6月1日。2015年8月1日其请求撤回优先权日为2014年3月1日的优先权。下列期限计算正确的是?
Thescariestpartofbuyingausedcarisnotbeingcompletelysureofwhatconditionit’sin.Acarthat’sbeeninamajoracci
下列哪项不符合渗出液的实验室检查特点
地方性斑疹伤寒的传播媒介是A.蜱B.蚊C.鼠蚤D.恙螨E.鼠虱
风险识别采用的分析和分解方法有()。
某超市有限公司12月份销售应税货物缴纳增值税27万元、消费税18万元,出租写字楼缴纳营业税6万元、印花税1.8万元。已知该公司所在地使用的城市维护建设税税率为5%,该公司12月份应缴纳的城市维护建设税税额为()万元。
人类从愚昧、野蛮到文明经历了漫长的发展过程,人类进入文明时代的标志是()
2012年6月份,北京市一星级饭店接待住宿人数比上年约()人次。
两只一模一样的铁罐里都装有大量的红球和黑球,其中一罐(取名“甲罐”)内的红球数与黑球数之比为2:1,另一罐(取名“乙罐”)内的黑球数与红球数之比为2:1.今任取一罐从中取出50只球,查得其中有30只红球和20只黑球,则该罐为“甲罐”的概率是该罐为“乙罐”的
北京某高校的王朋老师制作演示文稿的水平非常高,他制作的各类演示文稿深受用户好评。最近,王朋老师受北京市节能环保低碳创业大赛组委会委托,将要制作一份有关赛事宣传的演示文稿,该演示文稿主要用于展台自动播放。请按照下列要求帮助王朋老师组织材料完成演示文稿的整合制
最新回复
(
0
)