Jill: Alice, Peter and Mike are talking on the Internet.

Peter: I like playing the v____. Sometimes I go to the hall with my friends and play it there.

Alice: I like playing the g____. I go to the____every Friday afternoon.

Jill: My brother Ben and I love m____. We always play the drum together after school.

Mike: I am a school volunteer(志愿者). Sometimes I play the t____for the old men. They are happy.

二元一次方程2x+y=7的正整数解有（      ）

阅读短文，回答问题。

 姗姗小朋友吃苹果时，不小心将苹果的种子咽了下去。这粒苹果种子先遇到像轧钢机似的上下坚硬的怪物，差点儿将它压得粉身碎骨；刚躲过一劫，又遇到“酸雨”；后来它钻进了一条又长又窄的迷宫，它在这里走了很久，周边的许多物质都神秘地消失了；走出迷宫，它又差点儿钻进死胡同，幸亏及时改变方向，最后，它在姗姗上厕所时，和很臭的东西混成一起离开了姗姗。

请你帮这粒苹果种子分析一下：