可激活补体旁路途径的有()
A.抗A血型抗体与A型红细胞结合的复合物
B.凝聚的IgG1
C.酵母多糖
D.凝聚的IgA
E.葡聚糖
参考答案:C, D, E
------We all went to the cinema except you last night. Why didn’t you go?
------Because I ________ it twice.
A.have watched
B.had watched
C.would watch
D.was watching
由于拥有巨大的财富和比例非常高的知识精英,犹太人牢牢地在美国主流社会中()重要一席。
A.占据
B.占有
C.占领
D.抢占