单项选择题

The new moral dilemma is caused by ______.

A．high death rate of heart transplants
B．too low a proportion of successful operations
C．delicate organs being transplanted
D．too few human organs for too many recipients

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Would you please ______ (预订一张座位票) for this evening’s concert

单项选择题

Who should make a decision in the organ transplant if a donor's organ were equally suitable for two recipients

A．The doctors.
B．The donors.
C．The recipients.
D．Not mentioned in the passage.