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
2024-01-16
17
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/3366578.html
相关试题推荐
Peopleinthatareaexperiencedaseriousstorm.Itwasso______thatmanybuild
Likemostpeople,Iwasbroughtuptolookuponlifeasaprocessofgetting
Likemostpeople,Iwasbroughtuptolookuponlifeasaprocessofgetting
Toooftenyoungpeoplegetthemselvesemployedquitebyaccident,notknowin
志愿者将帮助人们找到前往体操馆和体育场的正确的路。Volunteerswillhelppeoplefindtheirwaytothegymna
SarawasmarriedtoMick.Mostofthepeople______totheweddingweretheirfr
Welovepeace,yetwearenotthekindofpeopletoyield______anymilitarythre
The______ofthenewepisodeofHarryPottermovieissogreatthatmanypeoplew
Transportationandcommunicationnetworksbringpeopletogether.Yetsometim
Transportationandcommunicationnetworksbringpeopletogether.Yetsometim
随机试题
InthehousewhereIgrewup,itwasourcustomtoleavethe"onthelatch"
Theoldcouplewillnever______thelossoftheirson.[2002]A、getoverB、getaw
M受体激动药是()A.新斯的明 B.哌唑嗪 C.普萘洛尔 D.间羟胺
阴或阳任何一方虚损的前提下,病变发展影响到相对的一方,其病理变化是()A.
表证常见于()A.内伤杂病初期 B.上焦的病证 C.皮肤疮疡类病
“两票三制”中的“三制”指(____)。(A)交接班制(B)巡回检查制(
人们常说的“耄耋之年”是指( )。 A.六十岁 B.七十岁 C.八九
某男,61岁。痰黄而黏,不易咳出,胸闷气促,久咳不止,声哑喉痛。医生诊断后,处方
(2021年真题)在资产负债表上,资产项目是按其流程性进行排列的,流动性强的项目
患者,女,9个月。秋季发病,呕吐伴腹泻2天,每天大便6~9次,为蛋花样无腥臭味,
最新回复
(
0
)