It is fast comfortable and convinient to travel by It is also Eg， if you want to go to Yuannan， it only take you over three hours by plane but you should spend more than thirty hours to go there by The beautiful hostess will take care of you on the plane so you don't need to worry But of course every coin has two sides， traveling by plane sometimes delay by bad weather so you have to wait for a long time in the waiting And you have to shut off your cell phone on the Sometimes you can't enjoy the beautiful
The Giant Bird At present， aircraft has become one of the most popular vehicles and There are many kinds of aircraft in the world， such as unpowered aircraft， jet aircraft， propeller aircraft， unmanned aircraft， solar-powered aircraft， ramjet aircraft and so (1)A fixed-wing aircraft is made up with fuselage， wing， vertical stabilizer， horizontal stabilizer， engines and landing (2) The legend of flight dates back to the days of pre-history， and many stories can prove (3) Our ancestors are so intelligent that making the dream of flight came true， which is according to the shape of The Wright brothers are very famous among the inventors， and they made their first flight trial on December 17， (4) This successful flight is admitted by the FAI (Federation Aeronautique Internationale)， and its status is (5) By 1905， their flight was able to fully controllable and (6) The First World War offered a platform for the use of aircraft as a weapon， and aircraft technology continued to develop following the (7)In the 1940s， military jet aircraft went into In the Second World War， military aircraft play an important role in the major battles， such as Pearl Harbor and the battle of B(8)Then the first commercial jet was produced in 1952， now aircraft is widely used for transport and national (9)From 1970 to 2005， the Boeing 747 was a widely used passenger aircraft， and now the world’s biggest commercial aircraft is the Airbus A380， which has double-deck， wide-body and four-(10)Now China has many kinds of Airbus， By comparison with others， aircraft is the fastest and the most comfortable It is appropriate to transport the small but precious goods in a long distance There are many free services on the plane like meals， drinks， blankets and so Flight crew are very mannerly and responsible， you can enjoy your trip under the A commercial aircraft has first class， business class and economy (11) You can choose one kind on the basis of the individual condition With the development of aviation， air travel in recent years becomes more and more popular， and it facilitates the People can move from place to place by plane， the communication among the different parts of the world has become very The earth is getting smaller and more This makes a contribution to the global Also， we can use the rocket-powered aircraft for space (12) As a famous person said， a coin has two In fact， aviation has some negative impacts to the environment and human Aircraft engines give off noise， greenhouse gas and particulates， which leads to the climate’s changing and global (13)Recently， the rapid growth of the air travel brings on a rise in The IPCC figured that the aviation contributes to about 5% of climate (14)And we will have some untoward effects on the plane， such as nausea， tinnitus and The noise they make will hurt people’s Compare with other vehicles， aircraft is not the safest one， which is hardly influenced by the And the fee of air travel is extremely expensive， not everyone can afford Now most of countries in the world have taken some effective actions to deal withhe air “As of January 2009， 183 parties have ratified the Kyoto Protocol， which is aimed to stabilization and reconstruction of greenhouse gas concentrations in the atmosphere at a level that would prevent dangerous anthropogenic interference with the climate ”(15) In addition， some governments agreed to work through the ICAO to limit or reduce emissions from international aviation， and they went in for the adoption of an open emissions trading (16) So modern aircraft are noteworthy more fuel efficient， producers are hammering at reduce the emission of CO2 and other greenhouse They will use some high-efficiency and clean fuels to clear up the Thus， we can take advantage of this giant bird， which makes our life
