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2020年成人英語三級《完形填空》模擬練習(12)

發布時間:2020年07月06日 16:59:43 來源:網絡 點擊量:

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【摘要】成人英語三級考試內容包括閱讀理解、詞語用法與語法結構、挑錯、完形填空和英漢互譯五部分。為了幫助大家高效備考2020年成人英語三級考試,順利獲得成人本科學士學位證書,環球網校小編整理了成人英語三級考試模擬練習《2020年成人英語三級《完形填空》模擬練習(12)》。

2020年成人英語三級《完形填空》模擬練習(12)

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

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