A. important
B. slight
C. serious
D. major
第1题:
毒理学研究中提倡3R原则是指
A、replacement\reduction\refinement
B、replacement\recovery\refinement
C、replacement\reduction\reference
D、replacement\recovery\reactivity
E、replacement\recovery\reference
第2题:
第3题:
第4题:
The word “euthanasia” in the second paragraph most probably means ________.
[A] doctors’ sympathy to dying patients
[B] doctors’ aggressive medical measures to dying patients
[C] doctors’ mercy killing to reduce sufferings of dying patients
[D] doctors’ well-meaning treatment to save dying patients
第5题:
第6题: