For the audience to better understand the new concept, the professor
elaborated
it with many examples.
A、
summarized
B、
concluded
C、
classified
D、
explained
【正确答案】
D
【答案解析】
解析：划线单词elaborated“详细阐述”。summarized“总结”，concluded“得出结论”， classified“分类”，explained“解释”。本题正确答案为D。
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