单选题 Evidence came up ______ specific speech sounds are recognized by babies as young as five months old.
A. that B. which C. what D. when

【正确答案】 A
【答案解析】[解析] that为连词，引导evidence的同位语从句。that本应放在evidence之后，但由于同位语从句很长而主句的谓语又很短，因此后移至句尾。