Today is Tom's birthday. After school he walks past the shop on the street corner. He looks into the window. That pair of trainers(运动鞋) is still there. He really wants to have them.
He is very sad and walks away. He knows his mother can't buy him anything, because his mother has no money. The trainers are too expensive. He doesn't go home at once , because his mother can notice（注意）his worry. So he goes to the park and sits on the grass. Then he sees a boy in a wheelchair(轮椅). He finds that the boy moves(移动) the wheels with his hands. Tom looks at him carefully. The boy has no feet. He looks at his own feet. "It's much better（更好）to be without shoes than (比) without feet." he thinks. There is no reason for him to feel so sorry and sad. He smiles and thinks he is happy.
根据短文内容，选择最佳答案
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难忘的初中生活就要结束了。假如你是韩梅, 即将迎来全新的高中生活。为了尽快适应新的环境, 你打算在英语俱乐部的QQ群里留言, 谈一谈自己在高中学习、生活和与人相处等方面可能遇到的问题, 并向大家寻求帮助。
注意: 1.词数：80左右。
2.文中不能出现自己的姓名和所在学校名称。
3.留言开头已给出, 不计入总词数。
Hi, everybody. How's it going? I'll become a senior high school student this September.……
下列不具有细胞结构的生物是（ ）
