正确答案: A

花药上部的裂片可育，下部的裂片不育

题目：由于药隔延长，花药的花粉囊分成两部分，且( )。

解析：A

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举一反三的答案和解析：

[单选题]Where are the two speakers?

In Chicago

[单选题]担子菌的锁状联合和子囊菌的钩状体相似。( )

正确

[单选题]46___________

sigms

[单选题]This special school accepts all disabled students, __ educational level and background.

regardless of

[单选题]Which of the following can be the best title of this text?

Why do I read?

[单选题]子囊和担子皆是发生核配和减数分裂的细胞。( )

正确

[单选题]品种和亚种都属于植物自然分类上的分类单位。( )

错误

[单选题]After that, he knew he could any emergency by doing what be could to the best of his ability.

get through

解析：解析：本题考查与get相关的短语辨析。分析四个选项的意思：get away with侥幸逃脱；get on with与……有好相处；get through接通，顺利通过，完成；get across被理解，越过。根据语境：经过那件事之后，他明白了他能尽一切可能去顺利解决任何突发情况。