请用英文回答几个问题,Question (a):What is Information Technology?Question (b):What is Information System?Question (c):Why is it important to us?回答不必太长,一句话即可,比较着急,我是需要英文的回答，不是翻译.比如，第二问题的回答可以是：Information System是以提供信息服务为主要目的的数据密集型、人机交互的计算机应用系统。这句话用英语翻译过来怎么说？
问题描述：
请用英文回答几个问题,
Question (a):What is Information Technology?
Question (b):What is Information System?
Question (c):Why is it important to us?
回答不必太长,一句话即可,比较着急,
我是需要英文的回答，不是翻译.比如，第二问题的回答可以是：Information System是以提供信息服务为主要目的的数据密集型、人机交互的计算机应用系统。这句话用英语翻译过来怎么说？
答
a：信息技术是什么？
b:什么是信息系统
c:它对我们为什么很重要
答
Question (a):What is Information Technology?Information Technology,the range that it contains completely is very broad ,ranging from to,treatment or application arrives at the IT estate ,the bank,cons...