单项选择题

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A.6:15.
B.6:40.
C.5:35.
D.5:15.
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单项选择题
A.The threat of poisonous desert animals and plants.B.The exhaustion of energy resources.C.The destruction of oil wells.D.The spread of the black powder from the fires.
A.The threat of poisonous desert animals and plants.
B.The exhaustion of energy resources.
C.The destruction of oil wells.
D.The spread of the black powder from the fires.
单项选择题
A.He prefers taking a plane.B.He prefers taking a bus.C.He prefers traveling with the woman.D.He prefers staying at home.
A.He prefers taking a plane.
B.He prefers taking a bus.
C.He prefers traveling with the woman.
D.He prefers staying at home.
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