首页
登录
职称英语
For centuries man dreamed of achieving vertical flight. Leonardo da Vinci co
For centuries man dreamed of achieving vertical flight. Leonardo da Vinci co
游客
2024-02-06
15
管理
问题
For centuries man dreamed of achieving vertical flight. Leonardo da Vinci conceived the first mechanical apparatus(仪器), which could carry a man【C1】______up, but this was only a design and was never tested.
The ancient dream was finally realized in 1940 when a Russian aeronautical(航空学的)【C2】______, piloted a strange-looking craft of steel tubing with a rotating fan on top. It rose awkwardly and vertically into the air from a standing start, hovered a few feet above the ground, went sideways and backwards, and then settled back to earth. That【C3】______was called a helicopter.
Imaginations were fired. People【C4】______that vertical flight transports would carry millions of passengers as do the airliners of today. Such fantastic expectations were not【C5】______. It excels in military missions,【C6】______troops, guns and strategic instruments where other aircraft cannot go. Corporations use them as airborne offices; many urban areas use them in police work, construction and logging companies【C7】______them in various advantageous ways. Engineers use them for site selection and surveying, and oil companies use them as the best way to make offshore and remote work stations accessible to crews and supplies. Any urgent【C8】______to a hard-to-get-to place is a likely task for a helicopter. Among their other【C9】______of uses, they deliver people across town, fly to and from airports,【C10】______in rescue work, and aid in the search for missing or wanted persons. With all these functions, the helicopter has now become an extremely versatile machine.
A)recognize B)vehicle C)caustic D)anticipated
E)actually F)fulfilled G)employ H)carrying
I)mission J)straight K)helpless L)engineer
M)assist N)balancing O)abundance [br] 【C3】
选项
答案
B
解析
这里需要名词作主语,且此名词可以被叫作直升机,可选的只有vehicle,意为“交通工具”。
转载请注明原文地址:https://tihaiku.com/zcyy/3427771.html
相关试题推荐
Forcenturiesmandreamedofachievingverticalflight.LeonardodaVincico
Forcenturiesmandreamedofachievingverticalflight.LeonardodaVincico
Forcenturiesmandreamedofachievingverticalflight.LeonardodaVincico
Forcenturiesmandreamedofachievingverticalflight.LeonardodaVincico
Forcenturiesmandreamedofachievingverticalflight.LeonardodaVincico
Tallmenaremorelikelytohavechildrenthantheirverticallychallengedf
Tallmenaremorelikelytohavechildrenthantheirverticallychallengedf
Forcenturiesmandreamedofachievingverticalflight.LeonardodaVincico
Forcenturiesmandreamedofachievingverticalflight.LeonardodaVincico
Forcenturiesmandreamedofachievingverticalflight.LeonardodaVincico
随机试题
下列属于通货紧缩的财富收入再分配效应的是()。A.实物资产所有者受损 B.现金
龙胆药材(根)横切面最外层的保护组织是A.表皮B.后生皮层C.下皮层D.皮层E.
共用题干 TrafficinOurCitiesThevolumeof
以下不符合头孢噻肟钠特点的是A.反式体活性高 B.需避光保存 C.顺式体活性
炸药过期变质可导致()。A早爆 B拒爆 C爆轰
各种运输方式内外部的各个方面的构成和联系,就是( )。 A.运输系统
维果茨基强调()在认知发展中的作用。A.同化 B.学习 C.社会文化
2009-60.治疗胃痛痰湿中阻证,应首选 a.清中汤b.二陈
辩证唯物主义之所以是科学的世界观和方法论,是因为()。A.它揭示了自然界、人类社
我国道路运输业节能减排政策趋向体现为()。A.优化运输方式结构 B.制定节能法
最新回复
(
0
)