小学毕业后，小洋兴高采烈地来到初中学习。不久，他发现初中学习变化很大。学习科目多，作业多，老师讲课节奏快……于是，他改变了一些不良的学习习惯，采取了一些主动学习的方法和策略，开始慢慢到适应了中学学习生活。 

(C)

    Hello, boys and girls! My name is Dick. I'm a boy. I'm a robot (机器人). Please look here. These are my hands. My arms are long. I have no hair. This is my face. I have two big eyes, a long nose and a wide mouth. Here are my big ears. ⑶I have short legs and two big 　　 (foot). I can walk(步行). I can speak Chinese, but I can't speak English. I'm your good friend.

①点燃②通过灼热的氧化铜③通入石灰水④闻气体⑤通入紫色石蕊试液中⑥倒扣在盛水的水槽中⑦向盛有燃着蜡烛的烧杯倾倒．

各国移民移入美国后，经过长期的融合，形成了统一的