辽宁省名校联盟2022年高三12月份联合考试地理试卷答案(更新中)

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辽宁省名校联盟2022年高三12月份联合考试地理试卷答案(更新中)

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普通版:Follow Social Morality and Start from MeAiming to make us students behave properly and develop good habits in public,our schoolwill hold an activity called "Follow Social Morality and Start from Me".The observance of socialmorality is common.When we buy tickets,we should wait in line patiently instead of jumping thequeue.When visiting a museum,we are supposed to follow the rules and keep quiet.And it's alsoimportant for us to protect public property.As the basic criterion of social communication,social morality is content of the constructionof civic morality in the new era.Therefore,it's high time for us to take action to make a differenceto our society进阶版:Follow Social Morality and Start from MeEveryone has a moral compass and a set of social standards that they live by.In a schoolsetting they are usually shaped and reinforced by interactions among teachers and students.Thusour school is staging such an activity called "Follow Social Morality and Start from Me"as topromote students'moral developmentPublic property can be found in areas where everyone has access.No one has the right todamage what belongs to everyone.Students should not leave marks on the doors of the schoolrestrooms,walls and desks.We should use sidewalks for walking;no treading on the grass.Besides,well-mannered people are supposed to stay in queue.Cutting in lines anywhere is anindicator of unfairness and lack of respect.These examples are merely an epitome of social morality that help build a strong and securepersonality of any individual.It is essential that we start to build a framework of moral values toregulate personal behaviors,making a difference to our entire community.

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7.C【解析】物块由静止释放,由于: mgcos a,物块有沿斜面向下的加速度,加速下滑:由左手定则知,物块受垂直于斜面向下的洛伦兹力,根据牛领第二定律有mg sin a一F:=ma,F,一Fw,Fw=mgC0sa十qB,联立解得物块的加速度a=gsin a一r(gcos a+9B),A错误;物块下滑过程中,只有重力和滑动摩擦力做功,洛伦慈力和支持力不做功,根据功能关系,物块机械能的诚小量等于其克服摩擦力做的功,B错误:当物块沿料面向下运动的加速度减小到零时,速度达到最大,由受力平衡知mgna=(mgcos a十gv.B),解得.=mgsin a_mngcos apgBqB正确:若仅将磁场改为与原来相反的方向,则物块下滑时所受洛伦兹力方向垂直于斜面向上,有F=mgcos a一wB,解得a'=gina一r(COS-B可见物块的加速度随速度的增大而增大,当速度增大到一定值时,洛伦兹力大小等于重力垂直于斜面向下的分力,物块即将离开斜面做曲线运动,D错误。