题目

(2018·全国卷Ⅱ)The Chinese Ministry of Agriculture finds that between 2005—when the government started a soil­testing program ________ gives specific fertilizer recommendations to farmers—and 2011, fertilizer use dropped by 7.7 million tons. 答案：that/which 考查定语从句的引导词。分析前面的a soil­testing program是指物的先行词，再根据定语从句中缺少主语，后面是动词作谓语，故填that/which。如图所示，在Rt△ACB中，∠C=90°，AD平分∠BAC，若CD=6，则点D到AB的距离是（ ）A. 9 B. 8 C. 7 D. 6