A:ECDABE
B:EDABCE
C:EDCBAE
D:EADCBE
选择句子补全对话。
A. Is it green? B. What do you see? C. What colouris it? D. Good morning, Alice.
Danny: ____
Alice: Good morning, Danny.
Alice: I see a bird.
Alice: No, it isn't.
Alice: It's red.
当我们在享受通信带来的便利时,还要遵守通信中的____ 和____ 。