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【单选题】
番茄种子的千粒重约为A.
1 g
B.
30 g
C.
3 g
D.
10 g
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【多选题】How many brothers and sisters _____?
A.
have you got
B.
do you have
C.
are you having
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【单选题】Water samples can be stored ( ) days at four degrees centigrade after filtration.
A.
2
B.
10
C.
30
D.
90
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