单项选择题

A．Taking pictures under water.
B．Connecting pipelines.
C．Planting sea weeds.
D．Placing explosives under the water.
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单项选择题
A．Burros are relatives of the horse.B．Burros can adapt easily.C．Burros are common farm annals.D．There are many burros in the United States.
A．Burros are relatives of the horse.
B．Burros can adapt easily.
C．Burros are common farm annals.
D．There are many burros in the United States.
单项选择题
A．She was a famous author.B．She exemplifies the immigrant spirit.C．Her family later became famous landowners. D) She invented some labor-saving farm equipment.
A．She was a famous author.
B．She exemplifies the immigrant spirit.
C．Her family later became famous landowners. D) She invented some labor-saving farm equipment.
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