题目

—What a hot day! Have you had a drink?—Not yet. But I'd like to have       after work.A.itB.oneC.otherD.another 答案:B解析:略暑假期间有6名男生和4名女生到某社区参加社会实践活动,现在要选出5名同学参加清理社区小广告的活动:(I)选出5人中,恰好有3名女生的选法数有多少种?(II)选出5人中,女生至多有二人被选中的选法有多少种?
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