Which of the following describes the process in which one’s language ability is developed in natural and everyday situation?

A.Performance. B.Competence. C.Learning. D.Acquisition.

依据《普通高中美术课程标准（实验）》，下列选项中，不属于“篆刻”模块教学内容的是（）。

What is the focus when a teacher says to the class “Rewrite each of the following sentences using the passive voice.”?

根据提供的信息和语言素材设计教学方案，用英文作答。

教学时间：20分钟。学生概况：某城镇普通中学八年级（初中二年级）学生，班级人数40人，多数 学生已经达到《义务教育英语课程标准（2011年版）》三级水平。学生课堂参与积极性一般。语言素材：SummarizingWhile reading, make notes or underline the main idea of the text. After reading, write a short summary in your own words. This can help you better understand the text.A Country Music Song Changed Her Life ForeverWhen Sarah was a teenager, she used to fight over almost everything with her family. But five years ago, while she was studying abroad in England, she heard a song full of feelings about returning home on the radio. It made Sarah think about her family and friends back in the U.S. She came to realize how much she actually missed all of them. Ever since then, she has been a fan of American country music. Country music is a traditional kind of music from the southern states of America. Nashville, Tennessee is the home of country music. Many songs these days are just about modern life in the U.S., such as the importance of money and success, but not about belonging to a group. However, country music brings us back to the “good old days” when people were kind to each other and trusted one another. It reminds us that the best things in life are free-laughter, friends, family, and the beauty of nature and the countryside. Sarah hasn’t been to Nashville yet, but it is her dream to go there one day. She has already read a lot about the place and done some research on it. She knows that there is a Country Music Hall of Fame Museum in Nashville. There are also always a lot of great country music concerts with famous musicians and singers, like Garth Brooks. Sarah has already listened to most of his songs. “Garth is one of the most successful musicians in American history. He has sold more than 120 million records. I hope to see him sing live one day!”

设计任务：请阅读下面的学生信息和语言素材，设计一份时长20分钟的阅读教学方案。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 justification

评价学生的数学学习应该采用多样化的方式，请列举四种不同类型的评价方式。

设n阶方阵M的秩r（M）=r
A.任意一个行向量均可由其他r个行向量线性表出B.任意r个行向量均可构成极大线性无关组C.任意r个行向量均线性无关D.必有r个行向量线性无关