A．the disadvantage of working in an office

　　B．the waste produced in an office

　　C．to save resources when working in an office

　　D．how to save water in a restroom

2．How many kinds of waste are mentioned in the passage?

　　A．Two B．Three C．Four D．Five

3．From the passage we can infer that in the office ________．

　　A．using computers is a waste of resource

　　B．many people don't turn off the computers after using them

　　C．computers are run by electricity

　　D．a computer is not a must for working

4．It is suggested that we use both sides of the paper at the copier because ________．

　　A．we are short of paper

　　C．we should save paper

　　D．we have to pay for the paper

5．The underlined word "mugs" is most likely to be ________．

　　A．a machine that's makes coffee

　　B．a container that can be used again and again

　　C．a paper products for tea

　　D．something that can only be found in an office

课后作业：

书面表达

假设你读过一本史密期教授写的关于温室效应的书，仍有些问题需询问，想约他做一次电话访谈。请用英语写一封100字左右的信，信内包括以下内容：

Dear Mr. Smith,

________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Thank you for your prompt reply.

Yours truly,

Li Ming