单项选择题

A physical examination is a ______ to joining the army.

A．parliamentary
B．preliminary
C．elementary
D．complementary
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单项选择题
Some people think it's ______ to smoke with a cigarette holder.
A．flexible
B．sophisticated
C．versatile
D．productive
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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