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精彩回答
The music played by Lang Lang _____ very pleasing to the ear.
11个月前
改错 I would appreciate very much if you would help me.
1年前
商店购进一批皮球每只成本1.50元,出售时每只售价2.00元,当商店卖剩皮球20只时,成本已全部收回,并且盈利50元.问商店原购进皮球多少只?
1年前
若直线y=2a与函数y=|ax-1|(a>0且a≠1)的图象有两个公共点,求a的取值范围.
1年前
已知数列an满足a1=4 an=4-4/an-1(n大于等于2) 求证bn是等差数列 求数列an的通项公式
1年前