ideological and theoretical qualities and practical working ability, and strive to build a contingent of league cadres with positive work style and high quality. Hold a regular meting of the party secretary every fortnightly, arrange the work of the regiment, fedback the student information. Focus on training junior high school, junior high school secretary of the regiment branch to enable them to raise A firm political conviction, diligent and diligent learning spirit and practical and innovative work style.测量平均速度做每一个实验之前你都应该提出这些问题：实验目的或原理是什么？ 需要什么器材？ 控制什么？ 改变什么？ 观察什么？ 记录什么？ 结论是什么？§探究实验：测量平均速度实验前夕：（1）小车做什么运动？（2）怎样表示小车运动的速度？（3 ）怎样测量小车的速度？答：用 测出小车运动的 ，用 测出小车运动的 ，由公式 可算出小车的平均速度。【目的】练习用刻度尺和表测平均速度。【器材】 、小车（或小球）、 、 、 。【步骤】1.使斜面保持很小的坡度，把小车放在斜面顶端， 金属片放在斜面的底端，测出小车将 。把 和以后测得的数据填入以下表Strengthen the team connection, strengthen the knowledge education among the students (especially the first grade students), and promote the formation of good school spirit with the influence of the league members. All League branches should start with recommending outstanding students as the development objects of the League, take amateur league schools as the basis, conscientiously do a good job in the work of pre-league education, league membership education, League members' vanguard exemplary consciousness education, excellent league members' education, etc. Under the premise of ensuring the quality, the development quantity of league members will increase steadily, and the ranks of league members in middle schools will be strengthened constantly. I...
