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- 1She always gets tired.We all think she is______ heavy.
- 2谁知道松鼠的行为和生活习性
- 3比A的2倍少2.5的数用含A的式子表示是表示是( ),当a=4又4/5时,这个数等于( ).
- 4根据下面的话,写一篇英语作文,
- 5It has cites bue no houses,it has forest but no trees,it has river but no fish.What is it?
- 61.I often practise ( ) in the river.
- 7如何检验NaCl的存在
- 8甲、乙两地相距540千米,一辆汽车从甲地开往乙地,每时行驶58千米,行驶到290千米后遇到从乙地开来的一辆
- 9已知x的平方+x的-2次方=4,求x的4次方+x的-4次方的值
- 10已知函数y=2sin(wx+fei)是偶函数(w>0,0<fei<π)图像的两相邻对称轴间的距离为π\2 求f(π\8)