第23题: [单项选择]The reason (that) (many of homemakers) buy kitchen appliances (厨房用品) is (that) they want to do their tasks (in a shorter length of time). A. that B. many of homemakers C. that D. in a shorter length of time 参考答案:A 答案解析:应改为why。固定句型:The reason why…is that………的原因是……,why引导的是定语从句,在从句中作原因状语。