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题目
2、I am by nature soft as silk,
By nature too as white as milk;
I am a constant friend to man,
And serve him every way I can,
When dipped in wax or plunged in oil
I make his winter evenings smiles
3、Like grass it is green,but it is not grass;
Like blood it is red,but it is not blood;
It is round and smooth like a big egg

提问时间:2021-01-16

答案
cotton
soap
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