Whenever a patient needs an injection of Penicillin, the doctor does need to make sure whether his patient is to the medicine.
A. sensitive
B. addicted
C. allergic
D. efficient
网友回答
A. sensitive
B. addicted
(答案→)C. allergic
D. efficient
解析：本题考查形容词。sensitive敏感的；addicted 上瘾的；efficient有效的；be allergic to讨厌 ...，根据句意选C。