A、the size of the pig organs.
B、the quick rejection of the transplant by human bodies.
C、the speed of their maturity.
D、the technical complexity of the operational process.
A、the size of the pig organs.
B、the quick rejection of the transplant by human bodies.
C、the speed of their maturity.
D、the technical complexity of the operational process.
时间:2022-01-18 11:30 关键词: 全国英语等级考试(PETS) 全国英语等级考试(四级)