许多人认为飞机是20世纪最伟大的发明，你是怎么认为的？

许多人认为飞机是20世纪最伟大的发明，你是怎么认为的？ 许多人认为飞机是20世纪最伟大的发明，你是怎么认为的, 目:许多人认为飞机是20世纪最伟大的发明，你是怎么认为的, 首段:引题飞机的发展史; 第二段:飞机的好处快速; 第三段:飞机的好处舒适; 第三段:飞机的好处安全; 最后:否认是20世纪最伟大的发明。 at the beginning f the 20th entur, the art f trzied fling as ust starting t tae shape, and a entur later, at the beginning f the 21st entur, the trized flight has bee an irreplaeable eans f transprtatin fr dern pepleit has iense bearing n ur lives the airplanes idel used reah the average speed f 00 t 1000 ileters per hur, indisputablel the fastest eans f transprtatin the are 20 ties faster than ships, 7 ties than ars, and ties than trains in a rld lie urs here effiien is send t nne ,taing airplanes sunds fantasti • taing airplanes is re frtable passengers are free fr the fatigue the a suffer hen traveling b bus r train, and the s, ni -free abin and the first-lass servere ffered bth in ters f fd and entertainent, nvines peple that it is ell rth f paing re fr it the ass edia hih are nl t happ t ver the reprts n air rashes asinall urring arund ur rld a islead the readers that taing flight is dangerus atuall the flight trip is nsiderable safer than rad trip hever, it uld be tererit t lai that the trized flight is an inventin unahed b thers after all, it rs in traveling alne puter tehnlg has intrdued inventns lie internet , hih tend t eliinate the traveling besides, nulear energ, peniillin, bile phne, redit ard, hbrid rie breeding, tv set ,t nae but are fe, are all deniable inventins extrel iprtant fr huan being