先举例后总结说明的是________法。
设计任务:请阅读下面学生信息和语言素材,设计20分钟的英语听说教学方案。
教案没有固定格式,但须包含下列要点:
● teaching objectives
● teaching contents
● key and difficult points
● major steps and time allocation
● activities and justifications
教学时间:20分钟
学生概况:某城镇普通高中二年级(第一学期),班级人数40人,多数学生已经达到《普通高中英语课程标准(实验)》七级水平。学生课堂参与积极性一般。
语言素材:
The Louvre
From the earliest times, man has been interested in art. People have often worked together to collect and save the world's art treasure. Fine art treasures from many countries are kept in an art museum called the Louvre in Paris, France. The works of art have been collected by the people of France over many centuries.
The Louvre has not always been a museum. The ftrst building was a fort. In 1190, it was the kings' castle with high walls and a round tower. It had a moat to keep out his enemies. Over the years, the number of buildings around the castle grew. By 1350, the castle was no longer needed as a fort. The Louvre became a palace home for French kings and queens.
When Francis I became king of France in 1515,he brought in artists from many countries. One of the artists was Leonardo da Vinci from Italy. Da Vinci's "Mona Lisa" is the best known painting in the museum today. In 1973, the Louvre became a public museum, just as it is now. It is a place where art treasures have been saved for everyone to enjoy.
材料:下面是2016年10月南京市某中学思想政治课教师关于“文化创新的途径”的课堂教学设计(教学时间为45分钟)

问题:请运用思想政治课程教学理论,简要评价该教师在课堂教学中存在的可取之处。
背景资料: 某公路工程,合同价4000万元,合同工期270d。合同条款约定:(1)工程预付款 为合同价的10%,开工当月一次性支付;(2)工程预付款扣回时间及比例:自工程款 (含工程预付款)支付至合同价款的60%的当月起,分两个月平均扣回;(3)工程进度 款按月支付;(4)工程质量保证金按月进度款的5倍扣留;(5)钢材、水泥、沥青按调 值公式法调价,权重系数分别为0.2、0.1、0.1,其中钢材基期价格指数为100。
施工合同签订后,施工单位向监理提交了如图16-22所示的进度计划,并得到监理批准。

前6个月(即1~6月份)每月完成的工作量见表16-10。

6月份钢材的现行价格指数为110,其余材料价格无变化。
施工过程中,在第三个月末检查时发现:E工作延误20d,C工作延误10d,F工 作按计划进行,G工作提前10d。为满足业主坚持按合同工期完工的要求,在不改变网 络计划逻辑关系的条件下,施工单位根据表16-11按照经济性原则进行计划调整。
在G工作进行到一半左右,出现了合同中未标明的硬质岩石,导致施工困难。施 工单位及时采取合理措施进行处理并通知了监理。因处理硬质岩石导致增加费用20万 元、G工作延误 20d,对此,施工单位在规定时间内提出了工期及费用索赔。
问题:
1.按网络图图例方式,列出⑤、⑥、⑦三个节点的节点时间参数;指出网络图中 的关键线路;确定计划工期。
2.列式计算本工程预付款及其起扣点金额。工程预付款在哪两个月扣回?每月扣 多少万元?
3.列式计算4月份及5月份的工程进度支付款。
4.列式计算6月份的调价款。
5.针对3月末进度检查结果,评价工程进度,并分析确定调整计划的最经济方案。
6.针对G工作中出现硬质岩石的处理,分别指出施工单位提出的工期及费用索赔是否合理?并说明理由。