阅读理解
Man-made satellites have been sent up into space by many countries. These satellites go round the earth and help us to learn more about the earth, the weather and other things. Most countries use these satellites to sent and receive messages. 
For example, with their help China can send their programs to America, too. We can also use satellites to help us to make telephone calls to foreign countries.
1. These satellites go round ____.
A. the earth
B. the moon
C. the sun
D. the stars
2. Man-made satellites are ____ to people.
A. terrible
B. useful
C. unknown
D. not necessary
3. Without the help of man-made satellites, we couldn't see ____ on TV.
A. anything interesting
B. what other people are doing
C. foreign programs
D. colour films
34. Man-made satellites can a
lso help us ____ to our friends on the other side of the world.
A. write down
B. send birthday presents
C. pay visit
D. make telephone calls
