单项选择题

A．Three weeks.
B．Nine weeks.
C．Five weeks.
D．Ten weeks.
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单项选择题
A．Sailing a boat.B．Catching a worm.C．Fishing.D．Hanging clothes.
A．Sailing a boat.
B．Catching a worm.
C．Fishing.
D．Hanging clothes.
单项选择题
A．To design vessels that could make long ocean voyages.B．To design vessels that could travel faster than those in use at that time.C．To design vessels that could explore the coastline of Portugal.D．To design vessels that could carry larger crews and more cargo than existing ones.
A．To design vessels that could make long ocean voyages.
B．To design vessels that could travel faster than those in use at that time.
C．To design vessels that could explore the coastline of Portugal.
D．To design vessels that could carry larger crews and more cargo than existing ones.
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