2022卷临天下 全国100所名校最新高考模拟示范卷理综七 答案

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第二节One possible version:Dear RussellI,m glad to inform you that our school will hold anEnglish humorous story speech contest in the center hallthis Sunday in order to develop our sense of humor andpractice our spoken English. I' d like to invite you to takert in ItEvery participant is requested to prepare a humorousstory in English by themselves. So choose your story cau-tiously. The funnier your story is, the better it is. You areexpected to deliver your speech within five minutes. Youshould tell your story at a proper pace with a clear voiceLooking forward to your participation. I'm sure youwill be one of the winnersYoursLi Hu

13.(1)刻度尺(2分)(2)不需要(2分)30.6(2分)【解析】(1)本实验中除实验仪器和低压交流电源(含导线)外,还需要刻度尺测量位移(2)拉力传感器可测量出绳子的拉力,因此不需要小桶和砂子的总质量远小于小车的质量。(3)由于每相邻的两个记数点间还有四个点没有画出,所以相邻的计数点间的时间间隔T=0.1s,由逐差法可知x4+x3-x2-x1=4a,解得a=0.6m/s2。