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一个九位数最高为上是奇数、又是合数，百万位是最小的质数，千位上的数比最小的奇数大4，其余个位上都是0．这个数写作______，改写“亿”作单位的数是______．
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A.
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B.
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C.
predominantly
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preliminarily
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C.
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D.
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