Evidencehasbeenfoundthroughyearsofstudy

問題詳情：

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

【回答】

D　[考查同位語從句。分析句子結構可知，空格後面的部分是解釋説明evidence的內容的，是evidence的同位語從句，從句中不缺任何成分，故選連詞that。]

知識點：連詞

題型：選擇題