如图，已知数轴上有A、B、C三个点，它们表示的数分别是﹣24，﹣10，10．

（1）填空：AB 等于多少，BC等于多少；

（2）若点A以每秒1个单位长度的速度向左运动，同时，点B和点C分别以每秒3个单位长度和7个单位长度的速度向右运动．试探索：BC﹣AB的值是否随着时间的变化而改变？请说明理由．

    There is a zoo near my house. I like ____  there. There are many ____  in it.
    Look! There is a koala ____  the tree. Isn’t he ____ ? Under the tree, there is a ____ . Her neck(脖子) is so long. She is a lovely girl. ____  is the panada? She is eating the bamboo(竹子). She's ____  shy. But the elephant is interesting. He is playing with kids with his____ nose. They are very funny. Look! In the pool, there are two dolphins. They are playing with ____  balls. ____  happy they are !

最新数据显示，两会前后，人大和政协代表纷纷开通微博听民意、做“网民调查”，这些做法（    ）

①有利于保障人民当家作主的权力    ②有利于拓宽公民参与政治生活的渠道

③有利于公民行使政治权利                ④有利于党和政府科学民主决策