单选题 Evidence came up ______ specific speech wounds are recognized by babies as young as 6 months old.
【正确答案】 C
【答案解析】本题主要考查同位语从句。Fact, thought, concept, explanation, belief, doubt之类抽象名词后面可以用连接词引出同位语从句，具体说明这些名词的内容。