设函数f(x)= ,g(x)=x2f(x﹣1),则函数g(x)的递减区间是____.
在雨后的夜晚走路时,为防止脚踩到水汪塘而溅污衣裤,下列判断正确的是( )
—Could I borrow your dictionary?—___________, but you have to return it tomorrow.
淘气按照一定的规律写数:+101,+102,﹣103,+104,+105,﹣106,+107,+108,﹣109…,当淘气写完第100个数后,淘气一共写了____个正数,写了____负数.