
【名词&注释】
药用植物(medicinal plant)、王不留行(seed of cowherb)、过去分词(past participle)、头状花序(head)
[单选题]枫香的头状花序(head)发育成一球形的聚花果。( )
A. 正确
B. 错误
查看答案&解析
举一反三:
[单选题]石竹科的太子参与王不留行是两种药用植物,其药用部分( )。
A. 均为块根
B. 均为种子
C. 分别为块根、种子
D. 分别为种子、块根
[单选题]---Sorry, Professor Smith. I didn't finish the assignment yesterday.---Oh, you_______ have done it as yesterday was the deadline.
A. must
B. mustn't
C. should
D. shouldn't
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