
【名词&注释】
配子体(gametophyte)、孢子体(sporophyte)、裸子植物(gymnosperm)
[单选题]裸子植物的胚乳是( )。
A. 配子体世代,核相为n
B. 配子体世代,核相为3n
C. 孢子体世代,核相为2n
D. 孢子体世代,核相为3n
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举一反三:
[单选题]Nine in ten parents said there were significant differences in their approach to educating their children compared with __ of their parents.
A. those
B. one
C. both
D. that
[单选题]
B. Robert
C. Henley
D. John
A. LloydB. Robert
B. Henley
C. John
[单选题]云杉属小枝具( )。
A. 圆叶痕
B. 叶枕
C. 叶鞘
D. 托叶
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