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2. Samuel Morse was also good at art. ..............................

3. Long signals are represented as dots. ..............................
4. The telegraph was made well-known thanks to the radio. ..............................

5. About 25 words on average can be transmitted and received ..............................
by expert operator
2. Listen again. Answer the questions below.

1. How many types of signals are there?
..........................................................................................................................................
2. What is the transmission speed of Morse code measured in?

..........................................................................................................................................
3. How many words as maximum can an expert telegraph operator transmit and receive in
one minute?
..........................................................................................................................................

4. What animal is mentioned related to message delivery speed?
..........................................................................................................................................

5. How many telegraph companies had the US had before the mid of the 19th century?
..........................................................................................................................................

F. WRITING

XV Make complete sentences based on the given words.

1. I/ decide/ talk/ her/ face-to-face/ so that/ we/ understand/ each other/ more easily.
..........................................................................................................................................
..........................................................................................................................................

2. Nowadays/ people/ tend/ use/Facebook/Twitter/ social networks/ more/traditional
forms/ communication.
..........................................................................................................................................
..........................................................................................................................................

3. Internet/ be/ keep/ superior roles/ communication/ next decades.
..........................................................................................................................................
4. She/ refuse/have/ direct talk/me/ and/ she/ ask/ chat/Yahoo messenger.

..........................................................................................................................................
5. Messaging/be/convenient/sometimes/ it/easily/cause/confusion/misunderstanding.

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XVI Write an email (100 - 120 words) to your friend about your most favorite means of
communication.
You should base on the suggestions below:

50 | Big 4 - Bộ đề tự kiểm tra 4 kỹ năng Nghe - Nói - Đọc - Viết tiếng Anh (cơ bản và nâng cao) lớp 8 tập 2