下列计算正确的是（　　）

①文化创造的主体是人民群众，文学创作要坚持紧紧依靠广大群众

②文艺工作者要树立践行社会主义核心价值观，爱国敬业诚信友善

③文艺工作者要善于发现生活中的真善美，让作品绽放生活的光芒

④社会实践是文化创新的源泉，文学创作无需对生活进行艺术加工

    Do you like to shop on the Internet? Things online are very cheap. I often get 1 online. Let me tell you how to buy one when I want to know something about a book. Firstly, I write an e-mail to the online shop. Then they will2me some pictures of the book. I think this is very helpful.

    Online shops are3open. I can do shopping even at midnight if I want to . Real shops usually close4 nine o'clock in the evening.

    After you5the online shopkeeper what you want, you can have your things in a few days. When you go shopping in a shopping mall, you have to talk 6 with the shopkeeper and walk a lot. I don't like it, because I get tired 7.

    I am teaching my grandmother8 online. She cannot walk very far(远).9it is easy for her to shop online. My brother wants to learn how to do it too. He is very10most of the time. When he has a little free time, he can shop online. So you see, shopping online saves time.

下图是某地甲、乙、丙三日太阳路径图（以高度角和方位角为坐标，表示某地点从日出至日落太阳运行轨迹的一种图示），若甲、乙分别为该地一年中白昼最短与最长的两日。读图回答下列问题。