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
For centuries men dreamed of achieving vertical flight. In 400 A.(D), Chinese children played with a【B1】______toy that spun upwa
For centuries men dreamed of achieving vertical flight. In 400 A.(D), Chinese children played with a【B1】______toy that spun upwa
admin
2015-07-16
29
问题
For centuries men dreamed of achieving vertical flight. In 400 A.(D), Chinese children played with a【B1】______toy that spun upwards and fell back to earth as rotation ceased. Leonardo da Vinci【B2】______the fast mechanical apparatus, called a "Helix", which could carry a man straight up, but this was only a【B3】______and was never tested.
The ancient dream was finally【B4】______in 1940 when a Russian engineer piloted a strange looking craft of steel tubing with a rotating fan on top. It rose【B5】______and vertically into the air from a standing start, hovered a few feet above the ground, went sideways and backwards and then【B6】______back to earth. That【B7】______was called a helicopter.
【B8】______were fired. Men dreamed of going to work in their own personal helicopters. People anticipated that vertical fight【B9】______would carry millions of passengers as do the airliners of today. Such fantastic expectations were not fulfilled.
The helicopter has now become an extremely useful machine It【B10】______in military missions, carrying groops, guns and strategic instruments where other aircraft cannot go. Corporations use them as airborne offices, many metropolitan areas use them in police work, construction and logging companies employ 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 mission to a hard-to-get-to place is a likely task for a helicopter. Among their other multitude of uses: deliver people across town, fly to and from airports, assist in rescue work,and aid in the search for missing or wanted persons.
【B8】
For centuries men dreamed of achieving vertical flight. In 400 A. D. , Chinese children played with a fan—like toy that spun upwards and fell back to earth as rotation ceased. Leonardo da Vinci conceive the fast mechanical apparatus, called a "Helix", which could carry a man straight up, but this was only a design and was never tested.
The ancient dream was finally realized in 1940 when a Russian engineer 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 vehicle was called a helicopter.
Imaginations were fired. Men dreamed of going to work in their own personal helicopters. People anticipated that vertical fight transports would carry millions of passengers as do the airliners of today. Such fantastic expectations were not fulfilled.
The helicopter has now become an extremely useful machine It excels in military missions, carrying troops, guns and strategic instruments where other aircraft cannot go. Corporations use them as airborne offices, many metropolitan areas use them in police work, construction and logging companies employ 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 mission to a hard-to-get-to place is a likely task for a helicopter. Among their other multitude of uses: deliver people across town, fly to and from airports, assist in rescue work,and aid in the search for missing or wanted persons.
选项
答案
Imaginations
解析
空格后的系动词were提示所填词应为名词的复数形式。Imaginations,名词复数,意为“想象”。
转载请注明原文地址:https://jikaoti.com/ti/1t6FFFFM
0
大学英语六级
相关试题推荐
AccordingtoapapertobepublishedinPsychologicalSciencethishasaninterestingpsychologicaleffect.Agroupofresearche
OntheeveningbeforeAllSaints’Dayin1517,MartinLuthernailed95thesestothedoorofachurchinWittenberg.Inthoseda
Testsmaybethemostunpopularpartofacademiclife.Studentshatethembecausetheyproducefearand【B1】______aboutbeingeva
Children’sHealthcareofAtlantawantstomoveGeorgiaoutofthetop10listforchildhoodobesity(肥胖)by2016,officialssaid.
A、ThemanisgoingtoGermany.B、ThewomanisfromGermany.C、Thewomanisgoingonvacation.D、ThemancanspeakGerman.D
A、Dreamsoriginatefromreallife.B、Dreamsarealwaysoppositetoreality.C、Itishardtoexplaindreamsscientifically.D、The
A、Companiesshouldrecruitlow-paidinterns.B、Companiescangetbenefitfrompayingforinterns.C、Internsshoulddemandforhi
Economistsusuallystudymarkets.Now,twoAmericanshavewontheNobelPrizeineconomicsfornotstudyingmarkets.Theywills
InternationalWomen’sDay(8March)isanoccasionmarkedbywomen’sgroupsaroundtheworld.Thisdateisalsocommemoratedatth
A、Theself-assuredones.B、Thehigh-incomeones.C、Theaverageones.D、Thepopularones.A短文提到自信的人可能看起来比他们本身表现更出色一点,而且对加薪的忧虑也少点,
随机试题
报告分部确定的标准有()
养牛专业户申某将一头患重病的奶牛弃于野外。途经此地的岳某将病牛牵回家,请兽医治愈。申某得知后,向岳某索要奶牛。则申某
下列导致胎儿窘迫的因素中错误的是
超高层建筑的各避难层,应每隔()设置一个消防专用电话分机或电话插孔。
半包价旅游是在全包价旅游中扣除了()的一种旅游产品形态。
在Word中,()下可以显示页边距、页眉、页脚等。
按劳分配是社会主义的分配原则,它体现着()分配领域中社会主义性质的分配关系。
赢得2016年奥运会举办权的城市是()。
当总体中的个体分布具有周期性规律时,不适用的抽样方法是()
Accordingtothepassage,universitieslikeHarvardshould______.Intheauthor’sopinion,thedebateatHarvard______.
最新回复
(
0
)