Evidence has been found through years of study children’s early sleeping problems are likely to
continue when they grow up.
A. why
B. how
C. whether
D. that
网友回答
A. why
B. how
C. whether
(答案→)D. that
解析：考查同位语从句：句意：通过多年的研究已经发现了证据，孩子们早期的睡眠问题可能随着长大会继续。通过分析句子结构，可知这个句子中包含一个同位语从句，说明evidence的内容，用that连接同位语从句，that在同位语从句中不作任何成分，且没有实际意义，选D。