For convenience it is common to speak of plants as "herbs," "shrubs," and "trees

游客2023-12-10 33

问题 For convenience it is common to speak of plants as "herbs," "shrubs," and "trees," but it is really no sharp distinctions among them.

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答案 it-there

解析译文：出于方便人们通常把植物说成草、灌木和树，但其实它们之间没有明显区别。
分析：考查there be句型。此处it并不代指句中任何成分，也不是形式主语，因为后文并无真正的主语部分，故it应改为there。

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