皮皮学，免费搜题
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【多选题】
植物雄蕊有单体雄蕊、二体雄蕊、二强雄蕊、四强雄蕊、多体雄蕊、聚药雄蕊等类型，下列哪些项目可作为雄蕊分类型的依据（ ）。A.
雄蕊的数目
B.
花丝的长短
C.
花药的着生方式
D.
花药和花丝的分离与联合方式
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】_____ keep the insects out, she shut the window. [ ]
A.
So as to
B.
In order that
C.
In order to
D.
For
【单选题】In the streets,____________ was a hard job for the traffic police to keep the traffic in order. [ ]
A.
this
B.
it
C.
that
D.
there
【单选题】In order to keep the line moving, customers with lengthy ________ are required to do their banking inside.
A.
transit
B.
transactions
C.
turnover
D.
tempos
【单选题】How do librarians keep books in order?
A.
They arrange the books in alphabetical order.
B.
They put the books into a card catalogue.
C.
They give a number to each book.
D.
They put the books on the shelves.
【简答题】Users need to wipe ______ from the LED in order to keep it working well.
【单选题】They need ______ fear of heavenly retribution to keep them in ______ order.
A.
a; an
B.
the; ×
C.
a; ×
D.
×; ×
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