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
考研
Ultralight (超轻型的) airplanes are a recent development in aviation that provide what aviation enthusiasts have long been seeking:
Ultralight (超轻型的) airplanes are a recent development in aviation that provide what aviation enthusiasts have long been seeking:
admin
2017-03-23
40
问题
Ultralight (超轻型的) airplanes are a recent development in aviation that provide what aviation enthusiasts have long been seeking: born of the marriage of the hang glider and the go-kart (超型单座赛车) engine around 1974, when John Moody mounted a 12-horsepower go-kart engine on his Icarus II hang glider.
Today’s ultralights are not just hang gliders with engines; they are "air recreation vehicles." Modern ultralight planes use snowmobile engines that let them cruise at about 40 miles per hour, climb at about 400 feet per minute, and carry combined payloads of pilot and fuel up to about 200 pounds, which is about equal to an ultralight plane’s weight when empty. More than ten thousand ultralight planes were sold last year at prices ranging from $2,800 to $ 7,000. But the main reason for the increasing popularity of these aircraft is not that they are inexpensive, but that they are fun to fly.
The modern ultralight plane would look very familiar to the earliest pioneers of aviation. Otto Lilienthal made more than 2,000 flights in Germany in the 1890’s in what were actually hang gliders. Octave Chanute designed and built many early hang gliders. Augustus Herring, Chanute’s assistant, used these gliders as models for a glider that he built for himself. On this glider, Herring installed a compressed-air motor and flew 267 feet in 1898. The Wright brothers’ flyer was the grandfather of today’s ultralight planes. The pilot sat right out in the open, just as in modern ultralights, and used controls that were much the same as those used in today’s machines. Though most ultralight planes are used for pleasure flying, some are also used for crop dusting, aerial photography, and even military observation service. The likelihood is that further uses will be found for ultralight planes, but their greatest use will continue to be as air recreational vehicles.
Which of the following statements is an opinion?
选项
A、Ultralight planes use snowmobile engines that let them cruise at about 40 miles per hour.
B、John Moody used a 12-horsepower engine to power his Icarus II hang glider.
C、The use of ultralight planes will increase in such areas as crop dusting and aerial photography.
D、Otto Lilienthal made more than 2,000 flights in Germany in the 1890’s in what were actually hang gliders.
答案
C
解析
综观四项选择,唯有这一项是一种观点,其他三项是事实。
转载请注明原文地址:https://kaotiyun.com/show/TRLi777K
0
在职申硕(同等学力)英语
相关试题推荐
The______ofthecomputerchangedpeople’slifegreatly.
Usuallyyouwillbe(morelikely)tofindinsects(if)youexaminefinertwigs(ratherthan)the(coarse)partsoftrees.
Childrenmodelthemselveslargelyontheirparents.Theydosomainlythroughidentification.Childrenidentify【C1】______apar
Childrenmodelthemselveslargelyontheirparents.Theydosomainlythroughidentification.Childrenidentify【C1】______apar
Ametaphorisapoeticdevicethatdealswithcomparison.Itcomparessimilarqualitiesoftwodissimilarobjects.Withasimple
AccordingtonewresearchofProf.RandolfMenzelfromtheFreeUniversityinBerlin,thepopularimageofbeesastheultimate
AccordingtonewresearchofProf.RandolfMenzelfromtheFreeUniversityinBerlin,thepopularimageofbeesastheultimate
Woman:Robert,how’syourtriptoSouthDakota?Man:Ibelievetheoldsayingthattraveleastandwest,aman’sownhouseisst
Youaretowriteinnolessthan150wordsonthetopicInformationSecurity.YourcompositionshouldbebasedontheChinesecl
Drinkingwastewater?Theideamaysounddistasteful,butnewfederallyfundedresearchsaysmoreAmericansaredoingso—whether
随机试题
在《恐龙》中,主人公“我”在离开荒漠高原后第一次遇见的活物是一群()
养阴清肺汤的组成中不含
关于腮腺多形性腺瘤手术的叙述,错误的是
居住区内公共绿地的总指标,根据居住人口规模,下面哪项是不正确的?
下列表述正确的有()。
在产品说明书中,正文是详细介绍产品信息的部分。正文的写作手法不包括()。
常用的美术字体(黑体、宋体以外)有__________美术字、__________美术字、__________美术字以及__________美术字。
简述古代西亚的主要文化成就。(华南师范大学2006年世界古代中世纪史真题)
家里没用的东西都处理了。
A、Sheislookingforapart-timejob.B、Sheisworkinginamotorfactory.C、Sheisdoingsomeresearchonclassicmusic.D、She
最新回复
(
0
)