单项选择题

In the last few minutes the conversation has become seemingly ______ as if the discussion were of some minor domestic matter and not survival itself.

A．crucial
B．central
C．casual
D．causal
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单项选择题
City officials are considering building a path to give the public ______ to the site.
A．recreation
B．excess
C．excursion
D．access
单项选择题
The Olympic Games were watched by ______ billions of people around the world.
A．virtually
B．literally
C．deliberately
D．appropriately
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