首页
登录
职称英语
Many great inventions are greeted with ridicule and disbelief. The invention
Many great inventions are greeted with ridicule and disbelief. The invention
游客
2023-11-17
60
管理
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 Because of their efforts, the old tables were repealed in time and replaced by the first reliable figures for air pressure on curved surfaces.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. [br] People thought that the Wright brothers had______.
选项
A、acted without thinking
B、been negatively influenced
C、been too cautious
D、had not given enough thought
答案
A
解析
细节题。从文中第一段中出现的“impulsive fools”可以看出人们对怀特兄弟的反应,认为他们做事是不经大脑考虑的。
转载请注明原文地址:http://tihaiku.com/zcyy/3194884.html
相关试题推荐
Theinventionofelectricitymadegreatcontributiontocivilization______whic
TheIndustrialRevolution______intheinventionofthesteamengine.A、originat
WhataccountsforthegreatoutburstofmajorinventionsinearlyAmerica-b
WhataccountsforthegreatoutburstofmajorinventionsinearlyAmerica-b
______mainlyfortheinventionofthetelephone,AlexanderGrahamBelldevoted
WhataccountsforthegreatoutburstofmajorinventionsinearlyAmerica-
WhataccountsforthegreatoutburstofmajorinventionsinearlyAmerica-
WhataccountsforthegreatoutburstofmajorinventionsinearlyAmerica-
Manygreatinventionsaregreetedwithridiculeanddisbelief.Theinvention
Manygreatinventionsaregreetedwithridiculeanddisbelief.Theinvention
随机试题
What’sthemainfeatureofthenewmethodofpayingformeals?[originaltext]M:
Whatdoestheorganizertellthemembersaboutwhoshoulddoeachofthefollowi
Whatwouldtheholidaysbewithoutlotsoftinytwinklinglights?Lesscolor
TheOnlyChild:RevealingtheMythsThosewithoutsiblin
下列关于肠道杆菌的描述,不正确的是A.所有肠道杆菌都不形成芽孢B.肠道杆菌都为G
按照骨折的程度和形态分类,属于不完全骨折的是A.青枝骨折、斜形骨折 B.螺旋骨
小儿前囟饱满常提示A:佝偻病 B:甲状腺功能亢进 C:先天性甲状腺减低 D
消防应急灯具按蓄电池电源供电方式可分为()。A.自带电源型消防应急灯具 B.集
人在每一瞬间,将心理活动选择了某些对象而忽略了另一些对象。这一特点指的是注意的(
()是支撑销售长期增长的重要资金来源。A.资本公积 B.盈余公积
最新回复
(
0
)