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2015年成人英语三级完型填空练习题10

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  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 completely mixed together in the 4.This threw a new light in 5 laws of definite proportions.It was 6 necessary to suppose that the atoms 7 combinesintossmall groups of uniform 8 and so form more complex substance; 9 the mystery of this law was 10. Dalton suggested, for example, that carbon monoxide 11 formed by the one with one 12 of atoms of carbon and 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 Prout's law ( 17 all chemical compounds the different constituents 18 enter in unvarying proportions) would naturally 19 the relative weights of the many 20 kinds of atoms.

  1.A.gases B.pieces C.things D.gas

  2.A.timely B.trimmed C.tiny D.topical

  3.A.ought B.could C.will D.must

  4.A.sky B.atmosphere C.oxygen D.environment

  5.A.various B.many C.the D.those

  6.A.only B.too C.that D.extremely

  7.A.should B.were C.get D.could

  8.A.construct B.structure C.piece D.feature

  9.A.but B.also C.thus D.nevertheless

  10.A.solved B.discovered C.broked D.told

  11.A.must B.been C.were D.is

  12.A.putting B.pairing C.placing D.preparing

  13.A.while B.when C.therefore D.also

  14.A.piece B.type C.atom D.measure

  15.A.from B.in C.of D.for

  16.A.then B.so C.by D.that

  17.A.from B.in C.to D.for

  18.A.are B.wouldn't C.always D.never

  19.A.describe B.unit C.mix D.reveal

  20.A.different B.usual C.important D.chemical

  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,句中的词意为微粒的意思,选项C.tiny合乎题意。

  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”, environment意为“环境”,只有B项正确。

重点单词   查看全部解释    
construct [kən'strʌkt]

想一想再看

vt. 构筑,建造
n. 构想

联想记忆
uniform ['ju:nifɔ:m]

想一想再看

n. 制服
adj. 一致的,统一的

联想记忆
mystery ['mistəri]

想一想再看

n. 神秘,秘密,奥秘,神秘的人或事物

 
extremely [iks'tri:mli]

想一想再看

adv. 极其,非常

联想记忆
separate ['sepəreit]

想一想再看

n. 分开,抽印本
adj. 分开的,各自的,

 
substance ['sʌbstəns]

想一想再看

n. 物质,实质,内容,重要性,财产

联想记忆
nevertheless [.nevəðə'les]

想一想再看

adv. 仍然,不过
conj. 然而,不过

 
complex ['kɔmpleks]

想一想再看

adj. 复杂的,复合的,合成的
n. 复合体

联想记忆
environment [in'vaiərənmənt]

想一想再看

n. 环境,外界

 
timely ['taimli]

想一想再看

adj. 及时的,适时的
adv. 及时的

联想记忆

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