第71页

信息发布者：
On the Web.
By email.
（更多请点击查看作业精灵详解）
（更多请点击查看作业精灵详解）
It’s interesting/useful/helpful. (本小题答案不唯一。)
The code is easy to keep and share. / The teacher can check the homework anywhere at any time.
They are worried that their children will spend too much time on computers and less time communicating with others.
上一页 下一页