
【名词&注释】
药用植物(medicinal plant)、经济价值(economic value)、十字花科(cruciferae)、卵细胞(egg cell)
[单选题]卵细胞(egg cell)具有高度的极性。( )
A. 正确
B. 错误
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举一反三:
[单选题]
A. until after
B. ever since
C. so that
D. long before
[单选题]—Hi, Tom. Any idea where Jane is? —She_____in the classroom. I saw her there just now.
A. shall be B. should have been
B. must be D. might have been
[单选题]
A. foreing
B. allowing
C. persuading
D. leading
[单选题]十字花科植物具多种重要经济价值。芸苔属栽培种中以( )种类最多。
A. 油脂植物
B. 蔬菜
C. 药用植物
D. 花卉
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