Animals are part of nature _______ should be well protected. [ ]
A. and
B. or
C. but
答案:A
肉毒梭菌致食物中毒的主要临床症状为
A.呕吐
B.腹泻
C.运动神经末梢麻痹
D.发热腹泻,以水样便为主
E.假膜性肠炎