题目

Zhu Keming never thought he would be a hero one day, but he was just that on Saturday when he saved the lives of six runners during the mountain marathon（马拉松） in Baiyin, Gansu Province, in which 21 people lost their lives. It started off as a normal day for the 49-year-oldshepherd , who was taking care of his more than 30 sheep on the mountainside. But soon the weather was terrible, with rainfall and hail. The rain got so heavy that he couldn’t see clearly and had to run into a cave where he normally went to have a rest. Soon he fell asleep in the cave after covering himself with小云同学在一次测木块长度时，用两把刻度尺进行了测量，如图所示，则以下测量结果最接近木块真实值的是：（ ）A.3.2 cmB.3.25cmC.3.3 cmD.3.5 cm