腐败菌
参考答案:
是能引起食品腐败变质的各种微生物的总称。
With that trust ____ to serve all Americans and I will do my best to fulfill that duty every day as your President.
A.coming a duty
B.which comes a duty
C.comes a duty
D.a duty came
实验人员在进行动物实验时,必须以正确和适宜的方式抓取动物,禁止对动物采取突然、()的抓取方法。
A.快速
B.简单
C.粗暴
D.灵活