∵f(x)=x21+x2,
则f(2)+f(12)=45+141+14=45+15=1
故答案为:1
―What colours can give you a happy and satisfied feeling?
―________.
A.Blue and yellow
B.Orange and white
C.Orange and yellow
D.Red and yellow
猪群发生猪传染性胃肠炎,病死率最高的是()
A、10日龄以内仔猪
B、5周龄猪
C、育肥猪
D、初产母猪
E、经产母猪