问题

英语数字6,500,431,729读成____________.

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.
正确答案是:
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