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t there were four basic things from which everything else was made. They 8 these thingsearth, fire, air and water the four elements (元素 ). 9 man made more observations, they 10 that fire was not an element. 11 they concluded (得出結(jié)論 ) that land, air and water were not elements, 12 . 13 , there are more than 100 elements from which scientists believe all things are made. 14 land, air and water are not elements, they are three main parts of man’ s environment (環(huán)境 ). You will 15 more about them as you study the earth. 1. A. usually B. seldom C. never D. sometimes 2. A. above B. around C. across D. among 3. A. better B. more C. less D. worse 4. A wide B. high C. long D. deep 5. A. at B. in C. with D. to 6. A. below B. before C. between D. beside 7. A. found B. thought C. knew D. understood 8. A. called B. told C. name D. said 9. A. That B. For C. As D. So 10. A. believe B. planned C. decided D. want 11. A. End B. At last C. Hardly D. Nearly 12. A. too B. neither C. also D. either 13. A. True B. Read C. In fact D. Correctly 14. A. When B. As C. Since D. Though 15. A. exam B. study C. exercise D. know 名師點(diǎn)評(píng) 本篇著重介紹與人們的生活休戚相關(guān)的地球、水、空氣以及人們對(duì)它們的認(rèn)識(shí)過程。這是一篇說明文,文章淺顯易懂。 答案簡析 A。空氣通常被看成是裹在地球外表的毯子。 B。 B。 more than 固定短語“不僅僅”。