EXERCISE：
1. Paragraph 1____________.
2. Paragraph 2____________.
3. Paragraph 4____________.
A) The popularity radio and TV in Britain
B) The invention of the radio
C) The latest development of TV
D) The importance of the radio
4. In today’s world radio and TV have become ___________.
5. People make constant efforts to improve __________.
6. A telstar is a satellite that _____________.
7. With the help of the telsar， events can be reported to listeners and viewers and almost _____.
A) at the same time as they occur
B) a basic necessity of life
C) sends out signals all the time
D) travels around the globe
E) the reception of their TV sets
答案
1. A 2. D 3. C 4. B 5. E 6. D 7. A
