2022英语周报华中高一课标39答案

2.C【解析】系统处于平衡状态时,下面弹簧的弹力F1=(m1 m2)g,当上面的木块离开上面弹簧时,下面弹簧的弹力F2=mE,△F=mg,解得△z=n,B,C项正确。

第二节One possible versionniceDear overseas students from America,Here comes the news that Chinese Bridge series activities will be held in our school. So all of participants arewarmly welcome in the pep rally to get fully prepared for thefolloThemed at promoting Chinese culture around theworld, Chinese Bridge acts as a platform to help narrow thegap of mutual understanding about China. Whoever isactively involved in it will develop a positive awareness ofChinese and its culture behind. Based on it, the pep rallis scheduled in our school auditorium from 14: 00 p.m15: 00 P. m. next Friday afternoonPlease make sure you are available at that time andThe student’ s Union

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