Satellites are being used not only for medical purposes and for education but also for predicting the weather in a more reliable way. Many lives have been saved by advance warnings of hurricanes and other dangerous storms. Before satellites, weather forecasters had information only from locations with observation stations. The information was generally available only from land areas. There were few reports about conditions in areas covered by oceans about three-fourths of the world s surface. The significance of this lack becomes apparent with the realization that most bad weather originates at sea.

　　1. Even without space program, computers would have become very popular in every walk of life.

　　2. The passage gives an account of the practical benefits resulting from space research.

　　3. American education was the first area affected by space travel because science and engineering were placed much emphasis on after Sputnik I was launched in 1957.

　　4. The quality control methods resulted in more reliable products for space travel than for ordinary life.

　　5. To meet the increasing need for world communication, Americans could do nothing but lay more undersea cables.

　　6. Before satellites, people got little information about the weather conditions in the sea areas, where most bad weather originates.

　　7. American youngsters were particularly interested in science and engineering.

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