下列哪些因素可能与自身免疫病有关？（）
A.微生物感染
B.环境因素
C.基因缺陷
D.遗传因素
E.激素水平异常
参考答案：A, B, C, D, E
It was the training _______ he had at school _______ made him a good jumper. [ ]
A. what; what
B. that; that
C. what; that
D. that; had
截止到2007年底，我国共有27家中外合资基金管理公司，其中（）家合资基金管理的外资股权已经达到49％。
A.7
B.11
C.15
D.27
