用线连起来a植物 ____ A 分解者
b动物 ____ B 消费者
c细菌、真菌____ C生产者
The park was full of people_________ themselves in the sunshine.
Maria likes music very much. She thinks it is very ____ (interest).
给出如下结论:
①对任意m∈Z,有f(2m)=0;
②函数f(x)的值域为0,+∞);
③存在n∈Z,使得f(2n+1)=9;
正确的有( )