单项选择题

A good title for this passage is ______.

A．Getting Blood and Plasma
B．Special Blood and Colors
C．Human Blood Types
D．The Blood Bank of a Hospital
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单项选择题
People with type A blood can receive ______.
A．AB
B．B
C．O
D．None of the above
单项选择题
If you need a transfusion, the best and safest blood for you is ______.
A．type AB
B．exactly the same type as yours
C．a mixture of salt, plasma and type O
D．type A
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