单选题 Dick's mum was much kinder to him than she was to his brothers, ______ of course, made them jealous.
【正确答案】 D
【答案解析】[答案精解] 句意:迪克的妈妈对他比对他其他兄弟好得多,这当然使其他孩子忌妒。该题考查的是非限定性定语从句。从前后文来分析,空格后的部分是对前文意思的补充,因此结构上,此部分应为非限定性定语从句。关系代词不能用that。