A:开始生成蓝色沉淀,加入过量氨水时,形成无色溶液
B:Cu(OH)2溶于浓氨水的离子方程式是Cu(OH)2+4NH3 Cu(NH3)42++2OH-
C:开始生成蓝色沉淀,加入氨水后,沉淀溶解形成深蓝色溶液
D:开始生成Cu(OH)2,之后生成更稳定的配合物
随着电视剧《太阳的后裔》的热播,男主角宋仲基成了众多少男少女崇拜的偶像,小梅连宋仲基是哪国人都不知道也跟着痴迷起来。对此,你给小梅的正确建议是( )
①对从众心理和好奇心理要坚决消除
②应该发展自己独立思考和自我控制能力
③盲目从众是一种正常的心理现象
④要克服盲目从众,理智把握自己的行为
阅读理解
My problems started after I went to a boarding(寄宿)school. I was only 14, and at first I missed my family a lot. I often called them and cried on the phone. But after two weeks, I found I enjoyed being with my classmates at school. I had many friends who were boys. I thought of them as my best friends-but only friend. I never guessed my friendship with boys would become a problem.
Then, two months later, my friends told me that some teachers and girls said I was hanging out with boys all day long to get attention(注意)from them. A few months after that, the class teacher James asked the class to choose some students to join the Student Union. I thought I could win for I was doing well at school. I came first in the English and Math exams. A week later, the list(名单)came out and it didn't include me. James came to me and said, "Don't be sad. I know you're excellent! Maybe you're a little distant(远的)from the girls in our class. They don't know much about you, so some of them didn't choose you. It doesn't matter. Do your best to get on well with everyone and I think you'll make it next time. "
①驱逐帝国主义侵略势力出西藏
②在中央人民政府统一领导下,西藏人民有实行民族区域自治的权利
③西藏的现行政治制度不予变更
④中央政府不派军队进驻西藏
如图所示,电路由灵敏电流计与两个电阻连接而成.当使用1、2两个端点或1、3两个端点时可用来测量____(填电压或电流),其中使用____两个端点时量程较大.