英语智力题There are 49 birds and hares.A bird has two legs and a
英语智力题
There are 49 birds and hares.A bird has two legs and a hare has four.There are 100 legs in all.So there are______birds and _______.
There are 49 birds and hares.A bird has two legs and a hare has four.There are 100 legs in all.So there are______birds and _______.
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你能帮帮他们吗