单项选择题

The danger of transplanting animal organs into humans is that______.

A．it is considered ethically wrong
B．it may bring diseases into human bodies
C．it brings parasites into human bodies
D．it does more harm than good to humans

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热门试题

单项选择题Attempts to make artificial organs fail because______.

A．it is difficult to make artificial organs as natural as body organs
B．it is difficult to imitate the human world
C．the production process is complicated
D．the production is limited by nature

单项选择题Which of the following is NOT a limitation of organ transplantation

A．The organ donor must be young enough.
B．The organ donor must be healthy enough.
C．The organ donated must deserve transplanting.
D．The organ donated must be removed from one body.