回答： For example, paper is a significant invention in human's life. With paper, we can write down what really happened in our life, in our country, in our earth, and pass them away from generations to generations. In modern society, computer is definitely a wonderful improvement. We can easily send a email to someone no matter where he was instead of letters.

回答： Internet is the most meaningful invention in modern society. With Internet ,we have an access to chat with anyone in any place, we are able to acquire knowledge from all over the world, we can share our experience of happiness and hard time with strangers

回答： 中国社会在封建社会近千年的时间中，科技几乎是停滞不前的，但是反观现在的中国，现在的中国人，生活每天都发生着惊喜的改变。飞跃性的话进步不可能每天都在发生，这是一个人类智慧长期积淀的过程。但新的量变必然还会导致新的质变的出现。

回答： Taking the Internet as a example,

回答： First of all ,we have to talk about the accumulation of generations in human society. the excellent idea doesn't come into mind without any reason, knowledges based on practice from day to day makes who we are. Secondly, government policy plays a significant role in the outstanding improvement . Only when our government create a open and diverse atmosphere , the intellcent can pursue a higher achievement.