关键词：考研英语、排序样题、答案
样题：
1. A. It was not until he was 20 years old that he began to take an interest in literature.
B. Taking an interest in literature, he began to write poems.
C. He began to write poems, taking an interest in literature.
D. Because he took an interest in literature, he began to write poems.
答案：A
解析：这是一个关于时间顺序的题目。根据句意，应该先描述他开始对文学感兴趣的时间，然后才是开始写诗。所以，正确的顺序应该是A。
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