已知函数fx=ax2+bx+c(a,b,c∈R,a<0),满足f-1<0,f0>0,且对一切实数都有f1-x=f1+x成立,则有( )
照样子,给字换偏旁组成新字,再组词。
例如 减 感 感谢
婉 ____ ____ 哮 ____ ____
喘 ____ ____ 栋 ____ ____
Look at this plant. It is green. It has big leaves.