单项选择题

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A.At 10:00.
B.At 9:00.
C.At 9:30.
D.At 5:00.
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单项选择题
A.Ozone as a form of oxygen.B.Problems caused by the thinning of the ozone layer.C.The origin of ozone problems.D.The latest studies of ozone problems.
A.Ozone as a form of oxygen.
B.Problems caused by the thinning of the ozone layer.
C.The origin of ozone problems.
D.The latest studies of ozone problems.
单项选择题
A gorilla will lose games deliberately to ______.
A.persuade his friends to keep playing with him
B.prove his "theory of mind"
C.attribute mental states to others
D.continue the game with his partners
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