日本明治维新中，“文明开化”政策的主要内容是（    ）

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There are three monkeys in the zoo. The brown monkey is stronger than the yellow monkey. The yellow monkey is taller than the brown one. The little monkey is yellow,too. It's the youngest. Its tail is 38 cm long. It is only 40 cm tall. The yellow monkey is 150 cm tall. Ben is 160 cm tall.

根据短文内容完成句子。