关于因特网发展的英语演讲

Ladies and Gentlemen,
Today i will give a lecture about the development of the internet.
The Internet originated the precursor ARPAnet of the American Ministry of National Defense deluxe research plan office DARPA( the Defence Advanced Research Projects Agency) at the earliest stage, that net threw in the usage in 1969.From here, the ARPAnet becomes the marking that modern calculator network bear.
Internet of the second-time leap to be attributed to the Internet commercial, once the business organization step into this unfamiliar world of Internet, very quickly discovering it at correspond by letter, the data index, customer service huge potential of etc..Hence numerous business enterprises of the world-wide locations flow out into the Internet in succession, bringing the Internet development history ascend of a leap lately.
The Internet development experiences the research net and circulates net and 3 stages of the business net.
Nowadays world just to kn