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共回答了16个问题采纳率:100% 举报
1年前
等差数列{an}共有2n项,其中奇数项的和为90,偶数项和是72
1年前1个回答
你能帮帮他们吗
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model plane, friend, his, has, completed, your
11个月前
I like to play basketball, _______ she likes to play ping-pong.
1年前
A group of adults, highly succeeded in their jobs, went to visit their old professor.
1年前
阅读短文,判断句子正误。 Thirty years ago, my grandparents were young.
1年前
某校男生288人,女生312人.问男生占全校人数的百分之几?
1年前