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【单选题】
在植物分类学中，Eluse 观察描述植物十分精确，最初由他设立了__________。A.
目
B.
科
C.
属
D.
种
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举一反三
【单选题】You _____ come, but why didn't you appear? [ ]
A.
must have
B.
should have
C.
need have
D.
ought have
【单选题】When the library doesn't have the magazine you need, you______.
A.
have to go to another library for it
B.
can ask the librarian to buy a copy for you
C.
can ask the librarian to go to other libraries for it
D.
can borrow it from another library but don't have to go there
【简答题】影响动物采食量的因素有哪些?
【简答题】在自由采食条件下，影响采食量的动物方面因素有哪些？
【单选题】You ________here tomorrow if you have something important to do. [ ]
A.
needn't to come
B.
don't need to come
C.
needn't coming
D.
don't need coming
【简答题】采食量对动物生产效率有何影响？影响动物采食量的主要因素有哪些？
【单选题】—Have you brought with you? We won’t have time to come back. —Don’t worry. All the things we need are here, in this big bag.
A.
something
B.
anything
C.
nothing
D.
everything
【简答题】影响动物采食量的因素有哪些？
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