【简答题】Now if you subscribe fur one year, you can enjoy______.
【简答题】如图所示,在△ABC中,I为△ABC的内心,AI交BC于D,交△ABC外接圆于E. 求证:(1)IE=EC; (2)IE 2 =ED·EA.
【简答题】如图,EF是△ABC的中位线,BD平分∠ABC交EF于D,若BE=2,DF=1,则BC=( )。
【简答题】areas, you can enjoy various Chinese foods whenever you 84. ___________
【判断题】0201 函数在区域内解析与可导是等价的。
【单选题】You’d better book the tickets in advance;________ we may miss the chance to enjoy the concert performed by the pop star.
B.
otherwise C therefore D.nevertheless
【单选题】2对于字典d={'abc':1, 'qwe':2, 'zxc':3},len(d)的结果为: