2022七年级广州英语周报三期答案

第四部分写作第一节Dear Jack,Welcome to our school to study as an exchange studentAs for how to borrow books from the school libraryyou need to have your student ID card and present it to thelibrarian, who can register for you. Then you can go to thebookshelves to look for what you need. You can borrow 2books once and keep them for a week in order that you canhave enough time to finish reading them. If you haventread the book through, you can renew it. You' ll have topay for it if you get the book damaged or lost.hope all this can be of help to you. For morenformation, don,t hesitate to ask meLi Hua

11(1)0.57(2分)0.41(2分)(2)①(2分)解析:(1)依题意知打点计时器打下纸带上相邻两计数点的时间间隔T=0.1s,由公式v=得v=0.57m/s;由匀变速直线运动规律及逐差法△x=a得a≈0.41m/s2。(2)题图丙中图线①:在F为零时加速度为0.2m/3,即实验时平衡摩擦力过度图线②:在F=1N时木块的摩擦力仍然为零,则实验时没有平衡摩擦力或者平衡摩擦力不够,故小明同学根据实验所描绘的图像为图线①

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