无菌技术是指在执行医疗、护理操作过程中,防止一切()侵入机体,保持无菌物品及无菌区域不被污染的技术。
A.细菌
B.病原菌
C.真菌
D.微生物
E.衣原体
参考答案:D
—When were you born?
—I was born______December 3rd , 2000. [ ]
A. for
B. in
C. on
D. at