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
Many great inventions are greeted with ridicule and disbelief. The invention of the airplane was no exception. Although many peo
Many great inventions are greeted with ridicule and disbelief. The invention of the airplane was no exception. Although many peo
admin
2010-11-29
40
问题
Many great inventions are greeted with ridicule and disbelief. The invention of the airplane was no exception. Although many people who heard about the first powered flight on December 17,1903, were excited and impressed, others reacted with peals of laughter. The idea of flying an aircraft was repulsive to some people. Such people called Wilbur and Orville Wright, the inventors of the first flying machine, impulsive fools. Negative reactions, however, did not stop the Wrights. Impelled by their desire to succeed, they continued their experiments in aviation.
Orville and Wilbur Wright had always had a compelling interest in aeronautics and mechanics. As young boys they earned money by making and selling kites and mechanical toys. Later, they designed a newspaper-folding machine, built a printing press, and operated a bicycle-repair shop. In 1896, when they read about the death of Otto Lilienthal, the brother’s interest in flight grew into a compulsion.
Lilienthal, a pioneer in hang-gliding, had controlled his gliders by shifting his body in the desired direction. This idea was repellent to the Wright brothers, however, and they searched for more efficient methods to control the balance of airborne vehicles. In 1900 and 1901, the Wrights tested numerous gliders and developed control techniques. The brothers’ inability to obtain enough lift power for the gliders almost led them to abandon their efforts.
After further study, the Wright brothers concluded that the published tables of air pressure on curved surfaces must be wrong. They set up a wind tunnel and began a series of experiments with model wings. Because of their efforts, the old tables were repealed in time and replaced by the first reliable figures for air pressure on curved surfaces. This work, in turn, made it possible for them to design a machine that would fly. In 1903 the Wrights built their first airplane, which cost less than one thousand dollars. They even designed and built their own source of propulsion — a lightweight gasoline engine. When they started the engine on December 17, the airplane pulsated wildly before taking off. The plane managed to stay aloft for twelve seconds, however, and it flew one hundred twenty feet.
By 1905 the Wrights had perfected the first airplane that could turn, circle, and remain airborne for half an hour at a time. Others had flown in balloons or in hang gliders, but the Wright brothers were the first to build a full-size machine that could fly under its own power. As the contributors of one of the most outstanding engineering achievements in history, the Wright brothers are accurately called the fathers of aviation.
The idea of flying an aircraft was______to some people.
选项
A、boring
B、distasteful
C、exciting
D、needless
答案
B
解析
词汇题。考查的是文中“repulsive”一词的含义。
转载请注明原文地址:https://kaotiyun.com/show/6t1K777K
0
专业英语四级
相关试题推荐
IsContinuingEdforYou?Continuingeducationisimportantforeveryonenow,inallfields.Almostassoonasyou’vecomp
Somepeoplebelievethatyouhavetobeaspecialkindofpersontosellaproduct.Butalthoughitisclearthatasuccessfuls
Somepeoplebelievethatyouhavetobeaspecialkindofpersontosellaproduct.Butalthoughitisclearthatasuccessfuls
OnlinePriceWarsE-commercecustomersfeelthatover80percentoftheirdecisiontopurchaseornotresideinissuesbeyo
JohnD.Rockefeller,______,owned90percentofallAmericanoilrefineries.
Physicsisthepresent-dayequivalentof______usedtobecallednaturalphilosophy,fromwhichmostofpresent-daysciencearose
Frankalmostneverreceivedanyeducation,______?
Althoughthemodellooksgoodonthesurface,itwillnotbearclose______.
随机试题
如果要运行宏组中的宏,需要将宏指定为窗体或报表的________设置,或指定为“宏名”参数()
患者,女。孕6个月,小便不通,小腹胀急疼痛,坐卧不宁,畏寒肢冷,腰酸腿软。舌淡苔薄润,脉沉滑无力。应选用下列何方加减
通过检测下列哪些腺体的唾液分泌量来定量检查涎腺分泌功能
()模式由“项目法人”采用招标投标方式选定一个工程管理单位作为“代建单位”,与“代建单位”(受托方)签订“代建合同”。
设有独立董事的期货公司聘任首席风险官,()。
书面形式是当事人最为普遍采用的一种合同约定形式,合同的书面形式包括多种形式,其中有()。
企业价值评估模型分为股利现金流量模型、股权现金流量模型和实体现金流量模型三种,其中在实务中很少被使用的是()。
贾德的概括说所依据的主要是他在1908年所做的()实验,这个实验被看作是概括化理论的经典实验。
下列描述中正确的是
Whatdoesthespeakermean?
最新回复
(
0
)