单项选择题

A．Because she thinks the man is seriously ill.
B．Because the man can get immunized there for free.
C．Because all the service is free of charge in the university health center.
D．Because the vaccine has been invented there recently.
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单项选择题
A．It may easily go wrong and any unsaved work disappears.B．It crashes the computer easily.C．It may attract the thunder.D．It consumes more power.
A．It may easily go wrong and any unsaved work disappears.
B．It crashes the computer easily.
C．It may attract the thunder.
D．It consumes more power.
单项选择题
A．The growing work force provides it with more workers.B．The government taxes it lighter than before.C．Many people no longer cook at home.D．Highly educated work force improves its work efficiency.
A．The growing work force provides it with more workers.
B．The government taxes it lighter than before.
C．Many people no longer cook at home.
D．Highly educated work force improves its work efficiency.
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