正确答案: A

正确

题目：不完全叶中有一类仅具叶柄。( )

解析：A

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举一反三的答案和解析：

[单选题]What does the phrase“clam up”in Paragraph 2 probably mean?

refuse to talk

[单选题]According to the text, lungfish can________

remain alive out of water

[单选题]One function of the program is that it allows the owner to ______ at a distance.

change some access details for switching on the laptop

[单选题]

B．succeeded C．regretted D．failed

failed

[单选题]凹叶厚朴[Magnolia biloba(Rehd．et Wils．)Cheng]和银杏(Ginkgo biloba L．)学名的种加词均为biloba，其含义是( )。

叶二裂

[单选题]葡萄是合轴分枝，它的卷须是由( )形成的。

腋芽