问题补充：
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.
【小题1】These satellites go round .A．the earthB．the moonC．the sunD．the stars【小题2】 Man-made satellites are to people.A．terribleB．usefulC．unknownD．not necessary【小题3】 Without the help of man-made satellites, we couldn’t see on TV.A．anything interestingB．what other people are doingC．foreign programsD．colour films【小题4】Man-made satellites can also help us to our friends on the other side of the world.A．write downB．send birthday presentsC．pay visitD．make telephone callsA
答案：
(答案→)A
解析：
【小题1】根据These satellites go round the earth 可知选A
【小题1】根据and help us to learn more about the earth, t可知他们是有用的，故选B
【小题1】根据with their help China can send their programs to America, too. 可知选C
【小题1】根据We can also use satellites to help us to make telephone calls to foreign countries.可知选D
