题目

图5中给出的是用螺旋测微器测量一 金属薄板厚度时的示数，此读数应为_______ mm．   答案：5.624—5.626    解析:根据螺旋测微器读数原理，半毫米刻度已露出 所以读数为5.5+0.01x12.4=5.624 5.624—5.626—Kate, I will go to the Guangzhou Zoo next week, because I will have a ________ holiday— You mean you can have ________ off? Oh, that’s great!A.three-day; three days B.three- day; three days’C.three days’; three-day D.three days; three days