电子计算器中所用纽扣式电池为银锌电池，其电极分别为Ag₂O和Zn，电解质溶液为KOH溶液，电极反应为Zn+2OH^﹣﹣2e^﹣═Zn（OH）₂，Ag₂O+H₂O+2e^﹣═2Ag+2OH^﹣，总反应式为Ag₂O+H₂O+Zn═Zn（OH）₂+2Ag．下列叙述不正确的是（　　）

    Do you like sports? Do you play basketball or baseball in your P.E. class or after school?

    My sister and I like sports very much. (A) We are in our school tennis club__俱乐部）.We play tennis in the morning. It's very interesting. First, we do some exercises(热身练习）.Then, the teacher teaches tennis. We watch him carefully. Later, we play in pairs. Some boys can play very well，but we can't. They often come to help  us. Our teacher is glad to see this. He says our school has many clubs. “Do you like sports?” “Yes，we do, we answer.

    Sports are really fun, and they are good for us.

根据短文内容完成下列任务。

图为某海域生态系统中，生产者固定太阳能与水深关系曲线，虚线表示近海水域，实线表示远洋水域．

实验结束后，加在弹簧自由端的拉力消失，弹簧恢复至自然长度15cm，请你对表中弹簧长度的数据进行研究．