【正确答案】 C

【答案解析】推理判断题。本文第四段指出，nonenzymatic glycosylation的过程是较为复杂漫长的一个过程If a given protein persists in the body for months or years，some of its Amadori products slowly dehydrate and rearrange themselves yet again，into new glucose-derived structures．These can combine with various kinds of molecules to form irreversible structures named advanced glycosylation end products (AGE's)，如果这一过程确实与白内障的形成有关的话，那么crystallin proteins至少要存在几个月的时间。