下列哪种抗原不是颗粒性抗原?()
A.金黄色葡萄球菌
B.伤寒杆菌
C.红细胞
D.抗原包被的乳胶微粒
E.细菌外毒素
参考答案:E
反对解释
The picture of the park memories of our class’s trip last year, when Mr. Smith began to take charge of our class.
A.called up
B.reminded
C.turned up
D.came up