单项选择题

A．Supplying blood for people who need.
B．Providing a number of services for the public.
C．Helping the sick and wounded during the war.
D．Aiding people who were injured in an earthquake.
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单项选择题
A．The platform workers. B．The computers. C．The command spots. D．The machines.
A．The platform workers.
B．The computers.
C．The command spots.
D．The machines.
单项选择题
A．They think that people live to eat, but not eat to live. B．They think that people should eat the best food when living. C．They think that people eat to live, but not live to eat. D．They think that people eat to live and live to eat.
A．They think that people live to eat, but not eat to live.
B．They think that people should eat the best food when living.
C．They think that people eat to live, but not live to eat.
D．They think that people eat to live and live to eat.
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