题目

阅读理解 阅读下列材料，从每小题所给的四个选项中，选出最佳选项。 Everyone in Jay’s family takes turns doing different chores at home. They use a chart to help them remember what to do each day. Weekly Chores MondayTuesdayWednesdayThursdayFridaySaturday JaySet the tableWash dishes//Take out trashClean the room MumCook dinnerSet tableCook dinnerWash dishesNo cooking tonight/ DadWash dishesCook dinnerWash dishesCook DinnerPick up pizza/  (   )1. Where is the chart?           A. At Jay’s house.             B. In the classroom.    如图，已知球O是棱长为1 的正方体ABCD-A1B1C1D1的内切球，则平面ACD1截球O的截面面积为（ ）A．B．C．D．