将正确的图片和句子配对
① It's yellow. It's small. It goes “Peep,peep”.
② It's fat. It goes “Oink… oink”.
③ It's big. It goes “ Moo…moo”.
④ It's thin. It's in the tree.
⑤ It's yellow. It goes “ Quack …quack”.
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命题“∀x∈R,x2+2x+2>0”的否定是( )
下列常见的交通警示语中,与惯性无关的是( )