正确答案: A

单叶全缘且对生

题目：下列性状( )最为原始。

解析：A

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举一反三的答案和解析：

[单选题]I had great difficulty________the suitable food on the menu in that restaurant.

finding

解析：

have difficulty(in)doing sth.做某事有困难。

[单选题]40_____

path