I ____ ____ ____ ____ go shopping with me this afternoon.
14+4=____
24+4=____
34+4=____
已知函数f(x)=|2x﹣a|+|2x+3|,g(x)=|x﹣1|+2.
(1)解不等式|g(x)|<5;
(2)若对任意x1∈R,都有x2∈R,使得f(x1)=g(x2)成立,求实数a的取值范围.
下列不属于生态系统的是( )