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一个人去买鹦鹉,看到一只鹦鹉前标着:此鹦鹉会两门语言,售价二百元。而另一只鹦鹉前则标道:此鹦鹉会四门语言,售价四百元。该买哪只
A person to buy a parrot, see a parrot before the mark: This parrot will be two languages, priced at 200 yuan. The other parrot before the standard: This parrot will be four languages, priced at 400 yuan. Which to buy?