正确答案: A

正确

题目：白芷属伞形科，根入药，有活血、消肿、止痛之功效。( )

解析：A

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举一反三的答案和解析：

[单选题]凤梨(菠萝)由花序发育而来，属假果。( )

正确

[单选题]烟草(Nicotiana tabacum)全株含尼古丁，有剧毒。( )

正确

[单选题]监测冰岛火山灰的扩散面积和浓度变化所利用的技术手段主要是 （ ）

遥感技术

[单选题]The cost of renting a house in central Xi’an is higher than ____ in any other area of the city.

that

[单选题]She’ll never forget her stay there ________ she found her son who had gone missing two years before.

when

[单选题]根据下面，回答 49 ~ 52 题： CGUATEMALA CITY （Reuters） – A fish that lives in mangrove swamps（红树沼泽）across the Americas can live out of water for months at a time, similar to how animals adapted（适应）to land millions of years ago, a new study shows.

can stay alive for two months out of water