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【参考范文】Survey Report on Extracurricular ActivitiesWe did a survey recently on extracurricular activities.It shows that the majority of students are active inextracurricular activities,such as sports,reading in the library and various club activities,while there are asmall number of students,about 10 percent,who take no interest in them.Extracurricular activities are absolutely essential for us students,because they allow us to learn what can'tbe learned in class.More importantly,they help us become well-rounded persons.So we hope that all studentswill take a positive attitude to them.

2.C【命题意图】本题以木星与土星运动到与太阳处于同一直线上的位置的天文景观为背景，考查天体运动的有关知识，意在考查考生的理解能力和信息加工能力【解析】设木星绕太阳公转的周期为T,土星绕太阳公转的周期为T2,从2020年12月21日到两者与太阳再次共线（木星与土星相邻）所用时间为t,则有分1.解得=0年，故下一次看到木星和士星“拥抱”的时间大约在2040年，C正确。解题思路》由题干判断出木星和土星再次“拥抱”的条件是木星比土星多运动一圈是解决本题的关键。