单项选择题

An air ship _______ by energy from the sun has been suggested.

A． powering
B． to power
C．is powered
D．powered
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单项选择题
_______ was a planted sapling of the American redwood tree.
A．There is one of the gifts
B．One of the gifts that
C．That one of the gifts
D．One of the gifts
单项选择题
There is also an interest in sea horse, puffers and other salty types with shapes ____ and colors ____ than even the showiest of fresh-water fish.
A．more strange…more bright
B．stranger…. brighter
C．stranger… more brighter
D．more strange…brighter
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