Unit15 Communication
Lesson88
fire and smoke
flag
letter and stamps
computer
telegram
telephone
Internet
send an e-mail
Read and write.
1.We can send messages by fire and________________.
2.Other people can use _________________ to send and receive messages.
3.Sailors on a ship can use ___________ to signal other ships.
4.We can also use letters and ______________.
5.We can also use ______________________, ___________________ , and ____________________.
smoke
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