近年，全国各地掀起跳广场舞的热潮，广场舞有益身心健康，但也影响周围居民的生活，为避免给周边居民的生活造成干扰，下列措施合理有效的是（　　）

    I have a twin sister, Jenny. She has ____（长的）hair than me. Many people think ____（我们）must have a lot of things in ____（普通的，常见的）. That's not true. Jenny is creative. She won the best ____（奖项）in the school talent show. She likes making friends, so she is more ____（外向的）. But I like staying at home. And I watch TV ____（两次）a week because I have to go to school every day. I always get better ____（分数）but she is much less hard—working. So maybe I should help her. ____（然而）, we also have some similarities. We ____（都）like sports and going shopping, so we can talk about and ____（分享）everything. I love my sister.

Ⅰ.取适量试剂于烧杯中，加入一定量的水，发现烧杯外壁发烫，烧杯中的液体浑浊。

Ⅱ.将烧杯中的浑浊液体过滤，向滤液中加入一定量的稀盐酸，有较多气泡冒出。

资料：①碱石灰是氢氧化钠和氢氧化钙的混合物。

②碳酸钠与稀盐酸反应分两步进行：

Na₂CO₃+HCl=NaHCO₃+NaCl    NaHCO₃+HCl=NaCl+H₂O+CO₂↑

地理探究：北京的城市发展与京津塘协同发展．

读图1、2，完成下列探究．