| 1 | What is meant by a man-made satellite? | |
| 2 | Wireless satellite connections are expensive, he points out. | |
| 3 | How many satellites have been put into orbit round the earth? | |
| 4 | Computers made satellites possible, leading in turn to the communication revolution. | |
| 5 | The thesis summed up the new achievements made in electronic computers, artificial satellites and rockets. |
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