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单线半自动闭塞区间出站调，须发给司机（ ）。A.
半自动闭塞发车进路通知书
B.
C.
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【单选题】It is not the strongest of the species that survives, nor the most intelt that survives. It is ______ that is most adaptable to change.
A.
one
B.
that
C.
the one
D.
this
【简答题】The example of a bird sleeping in front of a mirror indicates that ________. A) the phenomenon of birds dozing in pairs is widespread B) birds prefer to sleep in pairs for the sake of security C) even...
【简答题】Most bird species that nest or feed in trees __________ about on both feet when on the ground.
【简答题】for it means that the life of most species is controlled by 4 conditions.
【简答题】Cancer occurs in most species of animals, in many kinds of plants and in ______.
【简答题】( )指在总体印象形成过程中,新近获得的信息比原来获得的信息影响更大的现象
【简答题】The rediscovery of this species of birds is one of the most___(ordinary)scientific findings in recent years.
【单选题】Of the thousands of varieties of bird species in North America, ( ) bright red plumage, like the cardinal, are most often designated as state bird.
A.
those that have
B.
who have
C.
in which
D.
to have their
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