首页
登录
职称英语
For centuries men dreamed of achieving vertical flight. In 400 A.D. Chinese
For centuries men dreamed of achieving vertical flight. In 400 A.D. Chinese
游客
2024-04-14
39
管理
问题
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 first mechanical【B1】______, called a "Helix," which could carry man straight up, but 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【B2】______. It rose awkwardly and vertically into the air from a standing start, hovered a few feet above the ground, went 【B3】______ and backwards, and then settled back to earth. The vehicle was called a helicopter.
Imaginations were fired. Men dreamed of going to work in their own personal helicopters. People anticipated that vertical flight transports would carry millions of passengers as do the airliners of today. Such fantastic expectations were not【B4】______.
The helicopter has now become an extremely useful machine. It【B5】______ in military missions, carrying troops, guns and【B6】______ 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【B7】______ 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【B8】______ crews and supplies. Any urgent mission to a hard-to-get-to place is a likely task for a helicopter. Among their other 【B9】______ of use: deliver people across town, fly to and from airports, 【B10】______ rescue work, and aid in the search for missing or wanted persons. [br] 【B8】
选项
答案
accessible to
解析
accessible to意为“易接近的”,与前面的句子成分构成“make+宾语+补足语(a.)”的结构。
转载请注明原文地址:https://tihaiku.com/zcyy/3555428.html
相关试题推荐
JustlikeChinese,Westernersgivegiftsonmanyoccasions,suchas,onbirt
JustlikeChinese,Westernersgivegiftsonmanyoccasions,suchas,onbirt
JustlikeChinese,Westernersgivegiftsonmanyoccasions,suchas,onbirt
JustlikeChinese,Westernersgivegiftsonmanyoccasions,suchas,onbirt
JustlikeChinese,Westernersgivegiftsonmanyoccasions,suchas,onbirt
JustlikeChinese,Westernersgivegiftsonmanyoccasions,suchas,onbirt
Forcenturiesmendreamedofachievingverticalflight.In400A.D.Chinese
Forcenturiesmendreamedofachievingverticalflight.In400A.D.Chinese
Forcenturiesmendreamedofachievingverticalflight.In400A.D.Chinese
Forcenturiesmendreamedofachievingverticalflight.In400A.D.Chinese
随机试题
Adviceto"sleeponit"couldbewellfounded,scientistssay.Afteragood
【教学过程】 环节一:谜语导入 【提出问题】“说是宝,真是宝,动物植物离不了,看不见,摸不着,越往高处越稀少”谜底是什么? 【学生回答】空气。
设备信息查看一般分为设备查看、分类查看、分区查看三种方式。
下列做法中,不符合信贷档案管理原则和要求的是()。A.将一个信贷项目形成的文
下列关于划分产品或服务风险等级时应考虑的因素说法,错误的是()。A.经营机
小学四年级的小伟每次考试都十分紧张,明明平时可以做对的题目在考试中总是出错。小伟
1922年7月,中国共产党第二次全国代表大会制定了 A.同中国国民党建立统一战
鉴别原发性醛固酮增多症与失钾性肾病的试验是 A.高渗盐水试验B.水利尿试验C.
()是指证券所代表的权利本来不存在,而是随着证券的制作而产生,即权利的发生是以证
商店里花布的米数是白布的2倍,如果每天卖30米白布和40米花布,几天后,白布全
最新回复
(
0
)