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

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
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？

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
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,consults about such as,the hospital,comes out ,fabrication ,movie and TV wait a minute ,their common characteristic all is to be dependent on information and information system.The environment certainly has still had the network that computer soft hardware,does link as said or narrated above all things because the net sum is very other various being engaged in design ,the upkeep ,the personnel who holds out and manages has formed a omnipresent IT estate commonly.
Question (b):What is Information System?
Information System is that the data taking providing information service as major objective is intensive ,the human-computer interaction computer applications is systematic.
Question (c):Why is it important to us?
To saying information coming enterprise being that very important o gains and makes use of o because of the present age business administration Fang Fang all be dependent on information's face to face,any enterprise makes policy especially needing information.Information is one kind of resource ,make use of good information resources to may develop and make use of much better a variety of other resource.

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