首页
登录
职称英语
We all know that it is possible for ordinary people to make their homes on th
We all know that it is possible for ordinary people to make their homes on th
游客
2024-01-14
12
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 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, 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] It is a delight to fly at the Pole because there______.
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
定位到文章第一段最后两句“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,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.”可推知,在热带上空不能确保不会遇到坏天气,而在北极上空的情况与之相反。故选C。
转载请注明原文地址:https://tihaiku.com/zcyy/3361581.html
相关试题推荐
Scientistsmeasuredtheimpactthatpeoplehaveontheenvironmentusingat
Scientistsmeasuredtheimpactthatpeoplehaveontheenvironmentusingat
Scientistsmeasuredtheimpactthatpeoplehaveontheenvironmentusingat
Formorethan600yearspeoplehavecomplainedthatyoungsterscannotwrite
Formorethan600yearspeoplehavecomplainedthatyoungsterscannotwrite
Firecanhelppeopleinmanyways.Butitcanbeverydangerous.Firecanhe
Firecanhelppeopleinmanyways.Butitcanbeverydangerous.Firecanhe
Peoplesaythatmoneycannotbuyhappiness.ThiswastrueforHowardHughes.
Peoplesaythatmoneycannotbuyhappiness.ThiswastrueforHowardHughes.
Peoplesaythatmoneycannotbuyhappiness.ThiswastrueforHowardHughes.
随机试题
[originaltext]Inlastweek’slecture,wediscussedthecharacteristicsofth
Haveyoueverseenamovieinwhichabuildingwasburneddownorabridgewas【B
设一棵二叉树中,度为1的结点数为9,则该二叉树的叶结点的数目为()。A.
根据《房屋建筑与装饰工程工程量计算规范》(GB50854-2013)规定,关于
( )可以保证和提高企业绩效管理制度和管理系统的有效性和可行性。A.获得高层领
以下关于个人住房贷款的说法中,正确的有()。A.个人住房贷款是银行向购买、建造
甲将自有之房屋2间租给乙,租期自1999年5月1日至2000年5月1日,租金每
全口义齿戴用一段时间后,引起髁突明显后移并出现关节症状,其原因是A:垂直距离过低
根据支付结算法律制度的规定,下列关于记名预付卡的表述中,正确的是()。A.不得
腹水浓缩回输治疗的禁忌证为A.血色病 B.肝豆状核变性 C.结核性腹膜炎
最新回复
(
0
)