题目

________mothers can’t go to the meeting ,because they have gone to New York on business.A.Alice and Lily’sB.Alice’s and Lily’sC.Alice’s and LilyD.Alice and Lily 答案:B解析:略一列火车以60千米的时速行驶到全程的30%后,离中点还有120千米,照这样的速度,行完全程需要多少小时?
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