專業英語四級考試完型填空題輔導練習
No confidence, only by constantly cultivate confidence.以下是小編為大家搜索整理的專業英語四級考試完型填空題輔導練習,希望能給大家帶來幫助!更多精彩內容請及時關注我們應屆畢業生考試網!
Sugar is so much a part of our modern life that we only really think about it when, for some 11 , we cannot obtain it. It has been known to man for at least 3,000 years, but has 12 into common use only in 13 times. Until quite recently it was considered as a medicine and as a luxury for the very rich only.
Sugar is, then, 14 to our civilization. But what 15 is it? Of course, most of us recognize sugar immediately as the sweet material which we put in coffee or cakes. This common form of sugar is derived from two plants: the sugar cane (a type of grass which grows to a height of twenty feet) and the sugar beet (which grows under ground). But there are in fact many types of sugar, and the chemist recognizes hundreds of different 16 , each coming from a different source.
About 90% of the sugar is produced as food. Only 10% is used in industry for 17 other than food production. Yet sugar has great possibilities for use as the basis of chemicals. It can even be used for making plastics. In the future these potential uses will certainly be developed more than in the past.
There are many reasons why we should 18 the production of sugar. Most important is that it is one of the most highly concentrated of energy foods.
Thus sugar cane and beet produce an average of 7,000,000 calories per acre. In this way they have the advantage over potatoes which give only 4, 000, 000, while the 19 for wheat and beans is 2 ,000,000 each. So three acres of land growing wheat, beans and potatoes give only 20 more energy than one acre of sugar.
A. slightly ntion on rn
E. strongly re ificant
I. exactly ease osals
M. purposes eties ous
參考答案II. C 12. G 13. D 14. H 15. I
16. N 17. M 18. J 19. F 20. A
-
大學生英語專業四級考試完形填空備考題及答案
Pentineceissomethingthatenervatesourspirit,causingagreaterlossthanlossitselfandmakingabiggermistakethanmistakeitself,soneverregret.以下是小編為大家搜索整理的大學生英語專業四級考試完形填空備考題及答案,希望能給大家帶來幫助!更多精彩內容請及時關...
-
英語專四閲讀考前指導習題
書山有路勤為徑,學海無涯苦作舟。以下是小編為大家搜索整理的英語專四閲讀考前指導習題,希望能給大家帶來幫助!更多精彩內容請及時關注我們應屆畢業生考試網!IliveinthelandofDisney,Hollywoodandyear-roundsun.Youmaythinkpeopleinsuchaglamorous,fun-filledpla...
-
2018年專四議論文寫作範文
專四寫作經常考察學生對於一些社會重要話題的看法,比如利弊與是否應該等。這類議論文的寫作對考生的'考驗也比較大,下面,小編為大家送上2018年專四議論文寫作範文,供大家參考。2018年專四議論文寫作範文:該不該給病人實施安樂死Mercykillingisoneofthemostcontrove...
-
專業英語四級完形填空練習題及答案
沒有永遠的`博學,只有永遠的學習;沒有永遠的聰明,只有永遠的思考;沒有永遠的智者,只有永遠的學者。以下是小編為大家搜索整理專業英語四級完形填空練習題及答案,希望對正在關注的您有所幫助!更多精彩內容請及時關注我們應屆畢業生考試網!Nearlyhalfthe(1)_________...