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. |
|