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
公务员
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
2013-10-28
38
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 maching, 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 de-sired 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 Because of their efforts, the old tables were repealed in time and replaced by the first reliable figures for air pressure on curved surfaces.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.
Lilenthal’s idea about controlling airborne vehicles was______the Wrights.
选项
A、proven wrong by
B、opposite to the ideas of
C、disliked by
D、accepted by
答案
B
解析
根据文章第三段第二句“This idea was repellent to the Wright brother.”可知,这个想法与the Wrights是相反的。故本题选B。
转载请注明原文地址:https://kaotiyun.com/show/Xx6q777K
本试题收录于:
中学英语题库教师公开招聘分类
0
中学英语
教师公开招聘
相关试题推荐
Whatdoyouwanttobewhenyougrowup?Ateacher?Adoctor?Howaboutanicecreamtaster?Yes,therereallyisajobwhere
Whatdoyouwanttobewhenyougrowup?Ateacher?Adoctor?Howaboutanicecreamtaster?Yes,therereallyisajobwhere
Whatdoyouwanttobewhenyougrowup?Ateacher?Adoctor?Howaboutanicecreamtaster?Yes,therereallyisajobwhere
Whatdoyouwanttobewhenyougrowup?Ateacher?Adoctor?Howaboutanice-creamtaster?Yes,therereallyisajobwher
Whatdoyouwanttobewhenyougrowup?Ateacher?Adoctor?Howaboutanice-creamtaster?Yes,therereallyisajobwher
1.Whydoairplanestakelongertoflywestthaneast?Itcantakefivehourstogowest-eastfromNewYork(NY)toLondonbu
1.Whydoairplanestakelongertoflywestthaneast?Itcantakefivehourstogowest-eastfromNewYork(NY)toLondonbu
Youayeateamstar!Workingwith______isreallyyourcupoftea.
—Ibegyoutoquitsmoking.Ican’treally______thatsmell.—I’mextremelysorrytohearthat.
RobertMoody,52,isanexperiencedpoliceofficer.Muchofhisworkinvolvesdealingwith【16】andgang(团伙)problemsintheschoo
随机试题
兴奋通过突触传递时电传导的速度变慢的现象是()
可保护病毒核酸,具有抗原性并能介入核酸进入宿主细胞的是病毒的
关于老年人药效学方面的说法中,正确的是
治疗小儿风寒咳嗽,应首选治疗小儿痰热咳嗽,应首选
男,46岁。从事粮食烘干工作25年,近期出现视物模糊,确诊为白内障。最可能的致病原因是
美国有关工程造价的定额、指标、费用标准等,一般是由()制订。
下列有关中国近代警察的建立的描述正确的有()。
一、注意事项1.本次申论考试是对应考者阅读理解能力、综合分析能力、提出和解决问题能力、写作能力和文字表达能力的综合测试。2.请使用简体汉字作答。二、给定资料1.2009年9月8日,上海白领张军(本名张晖)在去往公司开会的路上搭载
无行为能力人参与合同关系,可以担当的当事人是()。
ForeignerssoughtsheltersinallthefollowingplacesEXCEPT
最新回复
(
0
)