下列搜索引擎中属于目录搜索引擎的是（）
A、天网搜索
B、搜狐
C、Google
D、百度搜索
参考答案：B
分解因式：225-0.49p2=______．
—Mum, it is nice weather. I want to skate this afternoon.
—Don’t you think the ice on the lake is too thin to ________ your weight.
A．stand
B．catch
C．bear
D．take
