(三)
All the useful energy at the surface of the earth comes from the activity of the sun. the sun heats and feeds mankind. Each year it __1__ men with two hundred million tons of grain and___2__ ten million tons of wood.
Coal, oil, natural gas, and all other __3___ are stored-up energy from the sun. It was collected by the plants as carbon compounds and stored __4__ ago.
Even waterpower comes from the sun. Water ___5_ into vapor by the sun falls as rain. It runs ___6__ the mountains and is converted to electric power.
Light transmits only the energy __7___ comes from the sun’s outer layers, and ___8__ of this energy that is directed toward the earth never arrives. About __9___ of it is absorbed by the atmosphere of the earth. In __10___, the earth itself gets only one half-billionth of the sun’s entire output of radiant energy.
1. A. gathers B. produces C. provides D. sends
2. A. hardly B. merely C. really D. nearly
3. A. fuels B. solids C. soils D. materials
4. A. years B. ages C. times D. generations
5. A. turns B. turning C. turned D. is turned
6. A. up B. down C. around D. into
7. A. that B. what C. where D. because
8. A. little B. a little C. much D. few
9. A. nine-ten B. ninth-tenth C. nine-tenth D. nine-tenths
10. A. place B. fact C. form D. part
(四)
On Monday afternoon Mrs. Joan, dressed for going out, took her handbag with her money and her key in ___1__, pulled the door__2__ her to lock it and went to the Over 60s Club. She always went there__3__. It was a nice outing for an old woman who lived __4__.
At six o’clock she came home, let __5__ in and at once __6__ cigarette smoke. Cigarette smoke in her house? How? Had someone got in? She __7__ the back door and the windows. All were ___8__ or fastened, __9__ usual. There was no __10__ of forced entry.
1. A. it B. its C. her D. hers
2. A. in front of B. beside C. behind D. before
3. A. Monday B on Monday C, Mondays D. on Mondays
4. A. single B. lonely C. alone D. only
5. A. she B. her C. hers D. herself
6. A. smell B. smelling C. smelled D. smelt
7. A. notice B. saw C. checked D. looked through
8. A. locking B. locked C. closing D. closed
9. A. like B. look like C. as D. the same as
10. A. sight B. sign C. scene D. signs
答案：
(一)1-5:DCBCA 6-10:CDBDB
(二)1-5:CBACD 6-10:BBABB
(三)1-5:CDABC 6-10:BACDB
(四)1-5：ACDCD 6-10: DCBCB
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