(Ⅰ)求函数f(x)的解析式;
(Ⅱ)若f(m2+2m)+f(m)>0,求m的取值范围.
There __________ a big tree in front of my house . I could hear many birds sing in it .
人们习惯把澳大利亚称为“澳洲”,下列关于澳大利亚的叙述,错误的是( )