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- 2--is John coming by train?--he should,but he****not .he likes driving his car.
- 3一个高=5cm 底面周长15.7cm的圆锥,求表面积.
- 4___A_apple fell from the tree and hit him on ____head.A,An;the B,The;the Can;/ D,The;/
- 5求函数y=2x+1/x与y=-=3x-4的图象的交点坐标.
- 6已知函数f(x)=(x^2-1)/(x^2+1),证明对于任意不小于3的自然数n都有f(n)>n/(n+1)
- 7求 把白磷放入水中,并且在水中燃烧的方法.（越多越好）
- 8请教一道英语语法题,要理由!
- 9My sister and I ( ) in the ( ) room.
- 10小林在院子里立了根竹竿，中午时影子与竹竿在一条直线上，下午影子向右移动了30°，这时的太阳在（ ）方向. A.南偏东30° B.南偏西30° C.北偏东30° D.北偏西30°