英語數(shù)字6,500,431,729讀成____________.
A．six billion ,five hundred million, four hundred and thirty-one thousand, seven hundred and twenty –nine.
B．six thousand and five hundred million, four hundred and thirty-one thousand, seven hundred and twenty –nine.
C．six billion ,five hundred million, four thousand, three hundred and seventeen hundred and twenty –nine.
D．six thousand and five hundred billion four hundred and thirty-one thousand, seven hundred and twenty –nine.
A

試題分析： 讀數(shù)字時，要三位一讀。billion，million，thousand，hundred前面如果是數(shù)字時，不用復(fù)數(shù)形式。故選A。
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