卤素互化物是指不同卤素原子之间以共价键结合形成的化合物，xx，型卤素互化物与卤素单质结构相似，性质相近．试回答下列问题：

①鸦片战争的硝烟       ②中共在此蹒跚起步     ③日本侵略者的暴虐      ④国民党政权的灭亡

阅读短文，选择合适的答案。

    I study at Yu Hong Primary School in Guangzhou. I have forty-seven classmates (同学). Twenty-three are boys and twenty-four are girls. Our classroom is a nice one. It's very big. There are four windows and two doors in it. We have a big blackboard and a small one. The big one is for our teachers and the small one is for us. Mr. Li is our Chinese teacher. He is an old man. We don't like him at all. But Miss Chen, our English teacher, is a young woman. She is very nice. We all like her very much. So we like English the best. We often play basketball with Miss Chen.

有一瓶混有酵母菌的葡萄糖培养液，当通入不同浓度的氧气时，其产生的C₂H₅OH和CO₂的量 如下表所示。通过对表中数据分析可得出的结论是

读某区域2月大洋表面海水等温线分布图，完成下列各题。