判断正误。
I like Chinese music. I don't like pop music. Because I think pop music is not quiet. I can play the zither. My sister can play the zither, too . But she's better than me. We can play the erhu. I am better than my sister.
f(x)在x0处可导,a为常数,则lim△x→∞fx0+a△x-fx0-a△x△x=（ ）
南极是世界上最冷的地方，积雪很厚，终年不化。这里的动物主要有企鹅和海豹，它们都胖乎乎的，十分耐寒。企鹅一点儿也不怕人，非常讨人喜欢。
