—There are some apple pies on the table, you may take ________.
A:one
B:it
C:this
D:that
选择正确的读音
冷场____(chǎng cháng) 差错____(chà chā)
车马____(jū chē) 汤匙____(shi chí)
处罚____(chǔ chù) 大夫____(dà dài)
提防____(dī tí) 目的____(dí dì)
已知二次函数y=x2﹣2x﹣1的图象如图所示,根据图中提供的信息,求使得y≤2成立的x的取值范围是( )