2022英语周报九年级11答案

Paragraph IJatin looked up and he saw the other boys rushingahead. Refusing to give up at this crucial point, Jatinclenched his teeth, jumped to his feet and ran as fast as hecould. Finally, he was the fourth one to dash across thefinish line. Jatin couldnt help sobbing at the thought ofletting his sister down. But much to his surprise, the run-ner who collided with him was disqualified for breaking therule and Jatin won the third prize. Jatin felt overjoyed andrelieved during the award ceremony, holding the shoesclose to his chestParagraph 2Filled writh pleasure, Jatin walked home in no timeHe could not wait to see his sister and share the good newsOn his arrival, Jatin found Neha was walking about outsidnervously and anxiously. " Neha, see what I have got foryou.Jatin said excitedly, taking the prize out of his bagwith his trembling hands. The instant Neha saw the shoesher face lit up. So thrilled was she that she threw herself atJatin."Thank you! Jatin. " Tears of joy welled up in theieyes as the brother and the sister hugged tightly together

3.B【解析】对整体由牛顿第二定律得两次产生的加速度相同,拉力大小一定相同,C、D项错误;从左边拉动物体M,对物体m运用牛顿第二定律得F鼻=ma,从右边拉动物体m,对物体M运用牛顿第二定律得Fs′=Ma,因物体M的质量大于物体m的质量,以F弹

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