1．河江市人均住房情况的变化：
2．造成这些变化的原因所在；
3．人均住房情况的变化可能引发的问题。
Changes in Average Housing Space in Hejiang City

A．people should be able to respond quickly to the advancement of technology
B．future achievements in technology will bring about inconceivable dramatic changes
C．the importance of high technology has been overlooked
D．computer science will play a leading role in the future information services