While these synthetics for cloth are being developed, others will be discovered to take the place of wood and steel. We already have plastic furniture, plastic boats, and plastic dishes. As our wood and steel supplies dwindle , synthetic materials will be developed for building homes and giant skyscrapers.
1. According to the reading selection, the world in the year 2000 will achieve great progress in many fields.
2. According to the writer, our predictions about the future should be based on our free imaginations.
3. Synthetics in place of silk, cotton and wool will be made from rocks.
4. Based on available scientific information, it is predicted in this passage that the speed of air travel 50 years from now will reach 10,000 kilometres an hour.
5. Paragraph 8 mainly tells us that many diseases will be cured or under control in the future thanks to the advances in medicine.
6. To meet the increasing demand for food, scientists have found a way to mass-produce food by irrigating desert wasteland.
7. Underground networks of conveyor belts will be more convenient and more widely used than subways.
8. The way to grow vegetables, or other plants, in water is called______.
9. The water problems can be solved by producing rain and______.
10. One of satellites beneficial uses is to work as the medium for______.
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