题目列表(包括答案和解析)
阅读下面短文, 掌握其大意, 然后从1-25各题所给的四个选项中, 选出一个最佳答案。
Three quarters of the world is covered with water. But 1 three percent of this water is fresh. All the 2 is salty.It is the salt 3 sea water useless to 4 . If you take 5 salt away the water can be used for 6 . It is very simple to separate the salt 7 the water. You could do it very 8 in your own kitchen. 9 some sea water and heat it, 10 it will turn into steam. Catch the steam 11 a plastic bag, or metal container. The steam will cool and 12 back into water. Then taste 13 . You will find that it is no longer salty at all. The salt 14 behind in the 15 container. This way of making fresh water16 salt water is called distilling(蒸馏).
Here is something else you can try. 17 you have a refrigerator, put 18 sea water in it and leave 19 there until part of it turns 20 ice. Then melt this ice. You will find 21 the water is quite pure and 22 from salt. Seamen 23 went on the first great voyages of discovery in Antarctic 24 their drinking water 25 melting blocks of ice.
1. A. more B. only C. because D. usually [ ] 2. A. rest B. water C. others D. surface [ ] 3. A. takes B. forces C. makes D. has [ ] 4. A. him B. the man C. man D. woman [ ] 5. A. no B. a C. these D. the [ ] 6. A. drink B. drillingC. riding D. driving [ ] 7. A. from B. to C. with D.on [ ] 8. A. hardly B. easily C. slightly D. difficultly [ ] 9. A. Drink B. Make C. Take D. Take away [ ] 10. A. in the end B. in fact C. because D.otherwise [ ] 11. A. in B. for C. at D. on [ ] 12. A. go B.turn C. come D. return [ ] 13. A. the steam B. water C. them D. it [ ] 14. A. have been left B. had been left C. have left D. had left [ ] 15. A. heating B. heat C. cold D. cooling [ ] 16. A. heating B. with C. out of D. in spite of [ ] 17. A. But B. If only C. If D. Although [ ] 18. A. some B. a C. any D. they [ ] 19. A. to B. them C. the refrigerator D.it [ ] 20. A. at B. with C. for D. to [ ] 21. A. that B. which C. when D. why [ ] 22. A. free B. break away C. made D. really [ ] 23. A. they B. which C. who D. when [ ] 24. A. to get B. get C. getting D. got [ ] 25. A. by B. with C. to D.and [ ]
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