—How are you doing, Daisy?— , thank you.
A:I'm OK
B:I'm a teacher
C:I'd love to
D:I'm coming
下面句中有一处错误,请找出来并改正。
The horse is as thinner as the cow .
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提出植物和动物都是由细胞构成学说的是哪两位科学家? ( )