赞题库-背景图
单项选择题

The author suggests that the third most common blood type of European is ______.

A．A
B．B
C．AB
D．O
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热门试题

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

单项选择题People with type A blood can receive ______.

A．AB
B．B
C．O
D．None of the above