湖北省2022-2023学年度九年级上学期期末质量检测化学试卷 答案(更新中)

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第一节应用文写作(15分)Dear Jessie,Sorry to hear that you are bothered by some bad life habits,whichwill surely make you worn out and do harm to your physical andmental well-being.The following are some tips on how to break thesehabits.First of all,adjust your lifestyle to have a balanced diet andenough sleep,which is of critical significance for you to stay dynamicAlso of equal importance is to work out regularly.Only in this waycan you not only keep yourself in shape but also get refreshed.Besides,to change yourself for the better,self-discipline reallymatters/counts.For your health and future,take action straight away!Yours,Li Hua

6.C【考查点】本题考查力的平衡及库仑定律。【解析1对)轴正半轴上的点电荷进行受力分析如图所示，由受力平衡可得24今+一g。=kQ9一，解得0y(2a)(2a)2W2+1√2Q=49,AB错误；由题图乙可知，在0