正确答案: C

叶鞘、叶舌、叶耳、叶片

题目：禾谷类作物的叶包括( )等部分。

解析：C

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举一反三的答案和解析：

[单选题]What keeps Grimsvotn still?

The water pressure

[单选题]What has the woman decided to do on Sunday afternoon ?

To attend a wedding.