单项选择题

From 1994 to 1998 the number of Americans who had donated a kidney reached 244.

A． Right
B． Wrong
C． Not Mentioned
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单项选择题
None of the Americans who donated a kidney during the period lasting from 1994 to 1998 died from the procedure.
A． Right
B． Wrong
C． Not Mentioned
单项选择题
One of the reasons why the number of kidney donors has risen is that one is better off with one kidney instead of two.
A． Right
B． Wrong
C． Not Mentioned
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