A：∀x∈R,x2+1<1
B：∀x∈R,x2+1≥1
C：∃x0∈R,x02+1<1
D：∃x0∈R,x02+1≥1
关于光的传播，下列说法错误的是( )
There is a picture __________ the wall. And there are two windows __________ the wall.
澳大利亚国徽上的两种特有动物是____ 和____ ．
