08年英语四级完形填空模拟训练25

.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 15oxygen.Assuming this to be true， 16 the definite proportions of Prout‘s law would naturally 19 the relative weights of the many 20 kinds of atoms.?xml:namespace prefix = o ns = "urn:schemas-microsoft-comfficeffice" />

B.piecesC.thingsD.gas

B.trimmedC.tinyD.topical

B.couldC.willD.must

B.atmosphereC.oxygenD.environment

B.manyC.theD.those

B.tooC.thatD.extremely

B.wereC.getD.could

B.structureC.pieceD.feature

B.alsoC.thusD.nevertheless

B.discoveredC.brokedD.told