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In those days ,books could only be produced one at a time _____________.
#47111
A
in hand
B
with hand　
C
by hand
D
by hands
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An terrible earthquake happened          the Indian ocean          a spring afternoon.
#49426
A
on; in
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in; on
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on; on
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#48023
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#49306
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for
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We should protect the animals ______danger.
#50745
A
on
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in
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of
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