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1、2023年学位英语完形填空练习题附答案2023年学位英语完形填空练习题附答案Dalton wondered why the heavier and lighter gases in the atmosphere did not separate as oil and water do.He finally concluded that the constituent 1 must exist in the form of 2 particles or atoms and that these 3 be pletely mixed together in the 4 .This threw a
2、new light in 5 laws of definite proportions.It was 6 necessary to suppose that the atoms 7 binesintossmall groups of uniform 8 and so form more plex substance； 9 the mystery of this law was 10 . Dalton suggested, for exle, that carbon monoxide 11 formed by the one with one 12 of atoms of carbon and
3、oxygen, 13 carbon dioxide results from a single 14 of carbon uniting with two atoms 15 oxygen. Assuming this to be true, 16 the definite proportions of Prouts law ( 17 all chemical pounds the different constituents 18 enter in unvarying proportions) would naturally 19 the relative weights of the man
4、y 20 kinds of atoms.1. A. gases B. pieces C. things D. gas2. A. timely B. trimmed C. tiny D. topical3. A. ought B. could C. will D. must4. A. sky B. atmosphere C.oxygen D. enviro ent5. A. various B. many C. the D. those6. A only B. too C. that D. extremely7. A. should B. were C. get D. could8. A. co
5、nstruct B. structure C.piece D. feature9. A. but B. also C. thus D. nevertheless10. A. solved B. discovered C. broked D. told11. A. must B. been C. were D. is12. A.putting B.pairing C.placing D.preparing13. A. while B. when C. therefore D. also14. A. piece B. type C. atom D. measure15. A. fromB. inC
6、. ofD.for16. A. thenB. soC. byD.that17. A. fromB. inC. toD.for18. A. are B. wouldn?tC.always D. never19. A. describe B. unit C. mix D. reveal20. A. different B.usual C. important D.chemical 参考答案：1 .【答案】A【解析】根据上文中的heavier and lighter gases可以 确定，本空中应填入“组成的气体，即constituent gases.2 .【答案】C【解析】根据句子意思判断，句中的
7、词意为微粒的意思， 选项C. tiny符合题意。3 .【答案】D【解析】情态动词must在这里是“必定、必须”的意 思。4 .【答案】B【解析】sky意为“天空”，atmosphere意为“大气”, oxygen意为“氧气”，enviroent意为“环境，只有B项正确。5 .【答案】C【解析】这帮助解释了大气组成气体的比例确定原理。因 为是特指这一原理，用定冠词the.6 .【答案】A【解析】only necessary的意思是“仅仅是必要。故A 正确。7 .【答案】D【解析】根据句子意思判断，could是“可以”的意思。8 .【答案】B【解析】根据句子意思判断，这里需要“构造”这个词， 而B
8、符合题意。9 .【答案】C【解析】but, nevertheless表示转折意为“但是”， “然而；thus 意为因此，如 There has been no rain. Thus, the crops are likely to suffer.一直没有下 雨，因此庄稼可能会受害。这里与上文有因果关系，故应选C.10 .【答案】A【解析】 solve 相当于 find a solution or an answer to,意为解决、解开，如：solve a problem (a puzzle, a mystery) ； discover 相当于 find something existing
9、but not known before, 意为 “发现”，如： discover a place (a fact, the truth) 0因此应选 A.11 .【答案】D【解析】因为是表一般规律，又是单数，所以用is这个 词。12 .【答案】B【解析】Pair这里是“匹配，配成双”的意思。13 .【答案】A【解析】while表示比照。 如：Some substances are soluble, while others are not.一些物质是可溶的，而另一 些物质是不可溶的。14 .【答案】C【解析】根据句子意思判断，atom正确。15 .【答案】C【解析】of表示“含量，分量”。16 .【答案】A【解析】then的意思是next, after that.17 .【答案】D【解析】for的意思是“对于，就而言”。18 .【答案】C【解析】根据句子意思判断。19 .【答案】B【解析】describe意为“描绘；unite意为“结合，合 并“；mix意为“（不同的东西）混合在一起“，如：mix flour and water； reveal 意为“揭露，提醒“。20 .【答案】A