Original: Science and technology have greatly influenced our lives and our society is changing very rapidly.

　　Revised: Science and technology have come to pervade every aspect of our lives and, as a result, society is changing at a speed which is quite unprecedented.

　　亮点评析
　　greatly，rapidly属于常用词，表示程度高、速度快，这样的词在表达效果上不够具体，缺乏说服力，在修改后的句子中用了pervade every aspect of our lives就具体生动地表现出科技的影响力到底有多大，其影响力已渗透到我们生活的方方面面，at a speed which is quite unprecedented意为“以一种前所未有的速度”，形象地道出了变化速度之快。