数字电视中的加扰（）是对（）进行所需的数字化处理。
参考答案：加密；音、视频信号或辅助数据
用括号内所给词的适当形式填空。
1. Please ___________(write) and tell me about Chinese food.
2. Classes ___________(start) at 8:00 in the morning.
3. What time does your aunt___________(eat) dinner?
4. Mr Smith loves___________( write) in English.
5. My father often ___________(go) to work at 8:00 a.m.
6. What a ___________( fun) time to have an English Party !
7. Here is a card for you with our best___________ ( wish) .
8. What beautiful___________( picture) they are!
简述同伴的作用。
