----- Nội dung dịch tự động từ ảnh ----- V. Choose the word or phrase (A, B, C or D) that best fits the blank space in the passage. About 20% of the world's (1) energy comes from the sun in one form or another. Special devices have already been made available to put on the roofs of houses and flats to catch the sun's rays and thus(2) these devices are now being used to provide energy in homes throughout the United States while more than a million (3) already been built in homes in Japan. Other purposes for which solar energy is, at present, being used include the separation of salt (4) irrigation, and sewage disposal. For most people in central heating but for cheap ways of cooking food, drying crops, and (6) 1. A. present water. Thousands of water-heating units have seawater, (5) countries, the need is not for air-conditioners or houses. B. past C. future D. now 2. A. hot В. C. heat D. cool warm 3. A. wave B. sky C. Moon D. solar 4. A. from B.in C. with D. through 5. A. develop B. developing C. developed D. development 6. A. lighted B. lighting C. light D. lit