单项表 双项表
参考答案
参考解析
【分析题】
下面是人教版高中数学必修5的一节内容，请据此回答下面的问题。
问题：
(1)请为本节课设计课堂导入；
(2)给出本节课的教学重难点；
(3)在讲解完正弦定理的证明之后，设计一个教学片段进行小结和内容上的提升。
【分析题】
In the meanwhile, the quality of facial tissues was constantly improving, because more manufacturers went into the business of making tissues, and each manufacturer strove to make his product better than his competitors'.
