题目

. —Why is it ________ so many people enjoy eating on the run? —Of course, the most obvious answer is that fast food is fast. A. that                     B. which                  C. what                    D. how 答案：A 解析: 本题考查特殊疑问句的强调用法，特殊疑问词why放在句首，即疑问词+is/was that….25吨稻谷可碾米310吨，现在要碾45吨大米需要稻谷多少吨？