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(赤道), although often they may feel uncomfo
We all know that it is possible for ordinary people to make their homes on the equator(赤道), although often they may feel uncomfo
admin
2016-04-30
44
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 trave lling across and around the equator on wheels, on their feet or in ships for thousands of years: but only a few men, with grea tdiff icul ty 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.
Aeroplanes can climb quickly( ).
选项
A、in warm air
B、in cold air
C、when it reaches the polar region
D、only when the clouds are down low
答案
A
解析
事实细节题。第二段第一句话可知,飞机在冷空气里不如在热空气里飞的高和快。所以选A。
转载请注明原文地址:https://kaotiyun.com/show/V8RO777K
0
成人本科学位英语
相关试题推荐
______hedoeshiswork,Idon’tmindwhattimehearrivesattheoffice.
Inthisway,betterqualityproductsatgoodvaluesarecontinuallybeingbroughttothepeopleofallincomegroups.
A(Lateron),childrenB(attemptto)maketheirpaintingsC(lookasclosely)aspossibleD(totherealthings)theyarerepresent
Lookingbackonmychildhood,Iamconvincedthatnaturalistsarebornandnotmade.Althoughwewerebroughtupinthesameway
Therearemanyolderpeopleintheworldandtherewillbemanymore.Alittle-knownfactisthatover60percentoftheolderp
Ifwewereaskedexactlywhatweweredoingayearago,weshouldprobablyhavetosaythatwecouldnotremember.Butifwehad
Ifwewereaskedexactlywhatweweredoingayearago,weshouldprobablyhavetosaythatwecouldnotremember.Butifwehad
Itisstrangethatsuchathing______inyourcompany.
Fromtheverybeginning,thegirl’sfamilyobjectedstronglytoherdatingthisguy.Thoughthegirllovedtheguy【C1】______,sh
OnNovember19,1863,AbrahamLincolnwenttoGettysburginPennsylvaniatospeakattheNationalSoldiersCemetery.TheCivilW
随机试题
JobAdvertisementOurcompanyisTianheAutomobileCompanyandweareseekingforamature,competentsecretarywhosemainr
我国新农村建设的中心环节是
常规根管治疗术的步骤为
在环境保护和城市规划要求限制区内,大型电磁辐射设施或高频设备的周围,不得修建居民住宅和()等敏感建筑。
浅埋暗挖法与“新奥法”的主要区别在于是否()。
根据套利组合的三个条件中“不需要投资者增加任何投资”的条件,计算出股票B的权重X等于()
以下符合《银行从业人员职业操守》的制定目的的是()。
职工王某1988年4月1日在甲公司参加工作,2000年4月1日调入乙公司工作;2001年5月1日王某患重病需住院治疗,他的医疗期应该是()。
下列选项中属于面向对象设计方法主要特征的是( )。
A、Shelikeshandicappedchildrenverymuch.B、Shewantstodosomethingforchildren.C、Shepreferschildrentooldpeople.D、Sh
最新回复
(
0
)