从边长为a的正方形内去掉一个边长为b的小正方形如左图所示，然后将剩余部分剪拼成一个矩形如右图所示，上述操作所能验证的等式是（ ）
The cars were honking （鸣叫） on the road one morning as I was walking to the park．I walked on and soon found the cause — a little taxi that had got stuck in the middle of th
Rae Armantrout, who has been a poetry professor at the University of California San Diego(UCSD)for two decades, has won the 2010 Pulitzer Prize in the poetry category for her most recent book, “V
世界上的火山、地震，大多发生在 （ ） A、板块内部
白马湖之冬 夏丐尊 在我过去四十余年的生涯中，冬的情味尝得最深刻的，要算十年前，初移居白马湖的时候了。十年以来，白马湖已成了一个小村落，
广西桂林中学2010—2011学年度上学期高三年级一月月考 -- How long do you think it will be ____ the USA recovers from the losses of the financial crisis? -- Perhaps fou
在平面直角坐标系中，已知单位圆与轴正半轴交于点，圆上一点， 则劣弧的弧长为 ▲ .
已知函数f(x)＝2sin x，对任意的x∈R都有f(x1)≤f(x)≤f(x2)，则|x1－x2|的最小值为( ) C．π D．2π
