【名词&注释】
裸子植物(gymnosperm)、双子叶植物(dicotyledon)、无性生殖(asexual reproduction)、被子植物门(angiospermae)
[单选题]52_________
A. undergone
B. skipped
C. rejected
D. replaced
查看答案&解析
举一反三：
[单选题]苏铁的胚具2片子叶，所以苏铁是双子叶植物。( )
A. 正确
B. 错误
[单选题]Diabeitcrockstar.com was created for _________.
A. diabetics to communicate
B. volunteers to find jobs
C. children to amuse themselves
D. rock stars to share resources.
[单选题]细菌在不良环境下产生芽孢进行无性生殖。( )
A. 正确
B. 错误
[单选题]It is reported that the police will soon ____ the case of two missing children.
A. look upon
B. look after
C. look into
D. look out
[单选题]Helping others is a habit, _______ you can learn even at an early age.
A. it
B. that
C. what
D. one
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