正确答案: A

正确

题目：洋葱属于单子叶植物。( )

解析：A

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举一反三的答案和解析：

[单选题]My friend showed me round the town,____________was very kind of him.

it

[单选题]普洱茶是常绿乔木，为茶的变种。( )

正确