题干
The accident to the man who to be a foreigner, so it was hard to deal with.
A：occurs; happened
B：happened ;occurred
C：came about; occurred
D：occurred ;happened
答案(点此获取答案解析）
D
要原因是流出的晶状体蛋白进人血液后成为抗原，免疫系统产生的抗体会攻击另一只眼球组织。这一过程与下列哪一现象在免疫学原理相同（ ）