求一些初一单词词性与用法,完整点koala,tiger,elephant,dolphin,panda,lion,penguin,giraffe,zoo cute,map,smart

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求一些初一单词词性与用法,完整点koala,tiger,elephant,dolphin,panda,lion,penguin,giraffe,zoo cute,map,smart

求一些初一单词词性与用法,完整点koala,tiger,elephant,dolphin,panda,lion,penguin,giraffe,zoo cute,map,smart
求一些初一单词词性与用法,完整点
koala,tiger,elephant,dolphin,panda,lion,penguin,giraffe,zoo
cute,map,smart

求一些初一单词词性与用法,完整点koala,tiger,elephant,dolphin,panda,lion,penguin,giraffe,zoo cute,map,smart
1)-(x^2-y)=x^2 -x^2 +y=-2 -x+y=-2 x-y=2