6.表示变化

　　1)Some changes have taken place in the past five years。

　　2)A great change will certainly be produced in the world's communications。

　　3)The computer has brought about many changes in education。

　　四级基础强化冲刺套餐班 | 英语四级特训班（五一特训）

　　六级基础强化冲刺套餐班 | 英语六级特训班（五一特训） 

(责任编辑：田学江)