单项选择题

A．The weather yesterday.
B．A polluted river.
C．Hotel accommodations.
D．The quality of the air.
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单项选择题
A．Drawing graphs.B．Giving presentations.C．Having a class discussion.D．Taking an examination.
A．Drawing graphs.
B．Giving presentations.
C．Having a class discussion.
D．Taking an examination.
填空题
Name two of the animals mentioned in the passage which are dying out
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