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 bythe 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 Prouts law 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.wouldnt C.always D.never
19.A.describe B.unit C.mix D.reveal
20.A.different B.usual C.important D.chemical
2017届高考英语一轮复习单元演练:必修2 Module 4《Fine Arts—Western Chinese and Pop Arts》(第2课时)(外研版含答案)
2017届高考英语一轮复习单元演练:必修5 Module 6《Animals in Danger》(第2课时)(外研版含答案)
2017届高考英语一轮复习单元演练:必修3 Module 5《Great People and Great Inventions of Ancient China》(第2课时)(外研版含答案)
2017届高考英语一轮复习单元演练:必修5 Module 5《The Great Sports Personality》(第2课时)(外研版含答案)
2017届高考英语一轮复习单元演练:必修4 Module 6《Unexplained Mysteries of the Natural World》(第2课时)(外研版含答案)
2017届高考英语一轮复习单元演练:选修6 Module 1《Small Talk》(第1课时)(外研版含答案)
2017届高考英语一轮复习单元演练:必修5 Module 2《A Job Worth Doing》(第2课时)(外研版含答案)
2017届高考英语一轮复习单元演练:选修6 Module 3《Interpersonal Relationships—Friendship》(第2课时)(外研版含答案)
2017届高考英语一轮复习单元演练:必修2 Module 2《No Drugs》(第1课时)(外研版含答案)
2017届高考英语一轮复习单元演练:必修2 模块综合练习(外研版含答案)
2017届高考英语一轮复习单元演练:必修3 Module 4《Sandstorms in Asia》(第2课时)(外研版含答案)
2017届高考英语一轮复习单元演练:选修6 Module 1《Small Talk》(第2课时)(外研版含答案)
2017届高考英语一轮复习单元演练:选修6 Module 3《Interpersonal Relationships—Friendship》(第1课时)(外研版含答案)
2017届高考英语一轮复习单元演练:必修5 Module 3《Adventure in Literature and the Cinema》(第2课时)(外研版含答案)
2017届高考英语一轮复习单元演练:必修3 Module 1《Europe》(第1课时)(外研版含答案)
2017届高考英语一轮复习单元演练:必修1 模块综合练习(外研版含答案)
2017届高考英语一轮复习单元演练:必修2 Module 5《Newspapers and Magazines》(第1课时)(外研版含答案)
2017届高考英语一轮复习单元演练:必修5 Module 2《A Job Worth Doing》(第1课时)(外研版含答案)
2017届高考英语一轮复习单元演练:必修2 Module 1《Our Body and Healthy Habits》(第1课时)(外研版含答案)
2017届高考英语一轮复习单元演练:必修3 Module 5《Great People and Great Inventions of Ancient China》(第1课时)(外研版含答案)
2017届高考英语一轮复习单元演练:必修3 Module 1《Europe》(第2课时)(外研版含答案)
2017届高考英语一轮复习单元演练:必修4 Module 5《A Trip Along the Three Gorges》(第2课时)(外研版含答案)
2017届高考英语一轮复习单元演练:必修3 Module 2《Developing and Developed Countries》(第2课时)(外研版含答案)
2017届高考英语一轮复习单元演练:必修3 Module 6《Old and New》(第1课时)(外研版含答案)
2017届高考英语一轮复习单元演练:必修5 模块综合练习(外研版含答案)
2017届高考英语一轮复习单元演练:选修6 Module 2《Fantasy Literature—Philip Pullman》(第2课时)(外研版含答案)
2017届高考英语一轮复习单元演练:必修3 Module 3《The Violence of Nature》(第1课时)(外研版含答案)
2017届高考英语一轮复习单元演练:必修4 Module 5《A Trip Along the Three Gorges》(第1课时)(外研版含答案)
2017届高考英语一轮复习单元演练:必修5 Module 1《British and American English》(第1课时)(外研版含答案)
2017届高考英语一轮复习单元演练:必修3 Module 3《The Violence of Nature》(第2课时)(外研版含答案)
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