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China is trying her best to develop its agriculture and _______ (工业).
1年前
汽车上山的速度为每小时54千米,行了5小时到达山顶,下山时按原路返回只用了4小时.汽车下山时平均每小时行多少千米?
1年前
用括号内动词的适当形式填空____ you ____(write) a letter to your mother at the moment?
1年前
I ________ for you for two hours at the gate of school.
1年前
在坐标平面内,到点A(0,3)和点B(2,-1)两点距离相等的点P的轨迹方程为 RT
1年前