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【单选题】
Proteins that stay within the nucleus are producedA.
on free ribosomes in the cytoplasm.
B.
in the nucleolus.
C.
on ribosomes attached to rough ER.
D.
on ribosomes and pass through the Golgi apparatus.
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【单选题】In order to find the missing child，villagers ________ all they can over the past five hours.(2012·安徽)
A.
did
B.
do
C.
had done
D.
have been doing
【多选题】Which of the following aspects need to be given in order to find the lost luggage?
A.
your flight number
B.
your age
C.
description about your luggage
D.
your contact number or address
【多选题】Which of the following aspects need to be given in order to find the lost luggage?
A.
your age
B.
your flight number
C.
description about your luggage
D.
your contact number or address
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