题目

It is often said______ teachers have____ very easy life. A. /; /         B. /; a           C. the; /           D. the; a 答案：B 解析: 前一个空复数名词前的泛指为零冠词，后一个空为泛指概念的单数意思是人生、生活。 Eating too much fat can ______ heart troubles and high blood pressure. A．attach to          B．attend to          C．contribute to       D．devote to