在后金社会中,下列哪个民族不占据重要组成部分:()
A、满洲
B、汉人
C、蒙古
D、朝鲜
参考答案:D
The flu is believed _____ by viruses that like to reproduce in the cells inside the human nose and throat. [ ]
A. causing
B. being caused
C. to be caused
D. to have caused
下列哪一项是非传染病
A.念珠菌性肠炎B.破伤风C.伤寒D.胰腺炎E.大肠埃希菌引起的尿路感染