家庭制作酸奶的一般步骤可简要概括为：A．新鲜的全脂或脱脂乳和糖混合→B．煮沸→C．冷却→D．加入一些购买的酸奶→E．发酵（放在室内温暖的地方数小时）→F．可食用

注意事项是：容器要事先消毒灭菌，发酵时要将容器加盖密封。

请你结合自己制作酸奶或甜酒的经验，回答下列问题：

影响我国气温分布的最主要因素是（　　）

补全对话
Bob: Hi, Bill! I’ve heard you are a football fan, aren’t you?
Bill: Yes.
Bob: (1) ____ 
Bill: Well, when I watch a football game, I feel excited. (2)____ 
Bob: Just a little bit. I’m not good at playing football. (3)____ 
Bill: Oh, I see. Do you have any favourite football stars?
Bob: (4)____ 
Bill: Oh, I like him, too.
Bob: (5) ____ 
Bill: Not much. I’m going to join a football club so that I can play football more.
Bob: That’s a good idea