英语周报高考版2022高考英语模拟试题五答案

第二节One possible version:I had made a fool of myself and every girl in the seventh grademust be laughing at me. The next day at school, when I wasn'tthe focus of every joke, I realized that Nicole could not have saidanything. Only then did i have time to think about how deep I hadhurt her definitely. As I knew, she was not an outgoing kind of girlHow hard must it have been for her to cross over to invite me. Butmy ridiculous reaction ruined everything. I couldnt help thinkingwhat I could do to make it up to her.With October came another dance. On stepping into thegym, I anxiously looked for Nicole. There she was, sitting in acorner, paying close attention to all the dancing couples. Takinga deep breath, i gathered courage to step forward. Lady, may Ihave the honor to dance with you? "I reached out my hand to her.We started to sway. We trusted each other. This time, everythingwent perfectly. This was my first dance, which led to my fullunderstanding of bravery, and most importantly, of dance

22(1)不需要(2分);(2)2(F=pmg)(2分);(3)0.25(2分)【解析】(1)本实验中,滑块受到的拉力通过弹簧测力计得到,故不需要测量小桶(含内部沙子)的质量。(2)分析滑块的受力情况,根据牛顿第二定律可知F-mg=ma,根据运动学公式可知2ax=v22(F联立解得△v2x,则在图乙中这条直线的斜率的表达式为k2(F(3)结合图乙可知k=2(F-pmg)_0.30.06=5解得p=0.25。

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