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单项选择题
A．The transportation for the trip is free.B．The class didn’t enjoy going on the field trip.C．Some people may not go on the trip.D．Everyone in the class has paid the fee.
A．The transportation for the trip is free.
B．The class didn’t enjoy going on the field trip.
C．Some people may not go on the trip.
D．Everyone in the class has paid the fee.
单项选择题
A．The reproductive cycle of barnacles.B．A new source of protein.C．Types of sea animals.D．The adhesive quality of barnacles.
A．The reproductive cycle of barnacles.
B．A new source of protein.
C．Types of sea animals.
D．The adhesive quality of barnacles.
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