单项选择题
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A.Because there is no water there.
B.Because there is no air there.
C.Because there is no plant there.
D.Because there is lifeless.
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单项选择题
A.Water.B.Hills.C.Flat land.D.Tall buildings.
A.Water.
B.Hills.
C.Flat land.
D.Tall buildings.
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填空题
E
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