题干
Old bottles or newspapers are also useful, so don't ___________.
A：throw them away
B：put them away
C：put away them
D：throw away them
答案(点此获取答案解析）
A
Old bottles or newspapers are also useful, so don't ___________.
A：throw them away
B：put them away
C：put away them
D：throw away them
在区间 -2，4 上是单调函数的条件是
在点
处的切线方程为
