下面不能反映区域自然地理环境影响人们的生活方式、生活习惯、文化传统等方面的一句话是（  ）

党的十六大报告指出：“发展必须相信和依靠人民，人民是推动历史前进的动力。”这说明了
①人民群众是党的力量之源、执政之基、胜利之本 ②人民群众是社会精神财富的创造者 ③人民群众是社会变革的主力军 ④人民群众是历史的创造者(     )

向50mL物质的量浓度均为0.1mol/L （NH₄）₂SO₄、Al₂（SO₄）₃溶液中逐滴滴入0.1mol/L Ba（OH）₂溶液200ml，随着Ba（OH）₂溶液体积的变化，沉淀总物质的量（n）的变化如图所示．下列叙述不正确的是（   ）

假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。错误涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词。
删除：把多余的词用斜线（＼）划掉。
修改：在错的词下划一横线，并在该词下面写出修改后的词。
注意：1．每处错误及其修改均仅限一词；2．只允许修改10处，多者（从第11处起）不计分。
    My high school life has made me learn many things. Between them teamwork is the most significantly for me. In fact, I didn't realize its importance after I was elected monitor. In the begin, I did almost all the duties myself, however, others students cared little about class activities. Therefore, I worn out and depressed. Then I turned to my head teacher but he advised me to cooperate with others. Gradually, I realized the strengths of my classmates and managed to have everyone to play a part in class. It is working in teams instead of on my own which has freed me of trouble and make my work more efficient.

某K₂CO₃样品中含有Na₂CO₃、KNO₃和Ba(NO₃)₂三种杂质中的一种或两种，现将6.9 g样品溶于足量水中，得到澄清溶液，若再加入过量的CaCl₂溶液，得到4.5g沉淀，对样品所含杂质的正确判断是    (    )