单项选择题

A．knew
B．understood
C．noticed
D．recognized
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单项选择题
A．discoveryB．mistakeC．decisionD．fortune
A．discovery
B．mistake
C．decision
D．fortune
单项选择题
Where are the animals of Asia
A． On the right of the walkway.
B． On the left of the walkway.
C． At the end of the walkway.
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