正确答案: A

球茎

题目：慈菇的( )供食用或制淀粉，或药用。

解析：A

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举一反三的答案和解析：

[单选题]39______

speak

[单选题]

read out

[单选题]According to the passage, most children tend to believe that they go to school because they_____.

have to obey their parents

[单选题]How does the author seem to feel about the future of newspapers?

Worried D． Surprised

[单选题]下列有关金属及其合金的说法不正确的是

生铁、普通钢和不锈钢中的碳含量依次增加

解析：生铁、普通钢和不锈钢中的碳含量依次降低，故B项错。

[单选题]What does the writer dislike most about dinner parties in New Yorkers

The bill is not fairly shared.

[单选题]世界杯足球赛可谓全世界球迷的节日。1990年第十四届世界杯在意大利举办时，一个英国球迷去意大利为自己喜欢的球队助威。他可以①持欧盟护照进入意大利 ②在罗马街头观看比赛电视直播

②③

[单选题]

believe in

[单选题]关于“前体药物”概念描述正确的是（ ）。

本身非药理活性