阅读上述材料,回答下列问题:
①日常生活中难免产生误会,需要主动沟通
②青春期的闭锁心理是正常的,要学会独处
③诚信待人的同时也要注重保护自己的隐私
④与父母相处时,需要掌握一些沟通的方法
①人要有诚信
②任何行为都会产生一定的后果
③行为的后果会直接表现出来
④行为的后果一定会随着行为的发生而发生
【査阅资料】①Na2S4受热时,会与空气中的水蒸气反应,生成少量有毒气体硫化氢
②硫代硫酸钠(Na2S2O3)可溶于水,常温下与NaOH溶液不反应。
③NaOH溶液可吸收硫化氢和二氧化碳。
【实验过程】
①取0.5g碳酸钠、0.2g硫粉混合后置于试管中,加入(如图①所示,夹持装置已略去),制得Na2S4 , 反应为:4Na2CO3+12S+X 2Na2S4+2Na2S2O3+4CO2 , X的化学式为。
②冷却后,取下棉花,放置一段时间,再向该试管中加入10mL水,迅速塞紧橡胶塞,充分振荡。测量液面至橡胶塞下沿的距离,记录数据h1(如图②所示);
③将该试管插入水中(如图③所示),拔下橡胶塞,观察到,塞紧橡胶塞。将试管取出,倒转过来,测量液面至橡胶塞下沿的距离h2 , 记录数据h2。理论上h2:h1= ;
④按照①~③再重复实验2次。3次实验数据如下表所示。
第1次 | 第2次 | 第3次 | |
h1/cm | 11.0 | 11.4 | 11.6 |
h2/cm | 8.7 | 9.1 | 9.2 |
【解释与结论】根据第1次实验数据,计算空气中氧气的体积分数为%(结果精确到0.1%);
【反思与评价】实验过程①中浓NaOH溶液的作用是;若实验过程②中,取下棉花后,未放置一段时间即进行后续操作,测定结果(填“偏大”、“偏小”或“无影响”),理由是:。
新中国成立后,民主法制建设经历了曲折发展的历程,取得了令人振奋的伟大成就,阅读材料,回答问题.
材料一 “法治”即法的统治(Rule ofLaw),是人民当家作主治理国家、行使民主权利的形式和保障;应当把法律看成是人民自己创造出来,规范自己行为、保障自己权益的社会公约,是维护自己合法权利的工具,它具有至上的权威.----摘编自《二十世纪中国法制文明的演进》
材料二 如果做更深入的思考就会发现,…难以准确把握我国社会的主要矛盾,造成“以阶级斗争为纲”的错误.这一错误不可避免地使…党的治国方略、方式不是与法律化、制度化民主政治建设相适应的“依法治国”,而只能是适合阶级都挣的“政策治国”…最终导致“文革”悲剧.-----摘编自《新中国的民主政治建设及启示》
材料三 十一届三中全会,中华人民共和国民主法制建设大事图表
历届人大立法情况
历届人大 | 立法数量(条) |
五届人大 | 60 |
六届人大 | 63 |
七届人大 | 87 |
八届人大 | 117 |
九届人大 | 113 |
, a baby has no tooth.
材料一:第24届冬季奥林匹克运动会于2022年2月4日至2月20日在北京和张家口两个城市成功举办。北京也创造了历史,成为第一个既举办夏季奥运会又举办冬季奥运会的城市。
材料二:“跳出一亩三分地,共绘大蓝图,京津冀协同发展”,这是中央提出的重大国家战略。
①冬季气温低,降雪不易融化
②冬季多风沙,积雪漫天飞
③地势平坦④地处山地
Mum told me an American myth (神话) about people's first tears (眼泪). Let me tell you about it.
Once upon a time, an Inuit man went hunting (捕猎) along the water for seals on the seashore. He would certainly bring home a great meal for his wife and son. He went quietly towards the seals. Suddenly, the seals began to move into the water. He was disappointed. His meal was getting away.
Then he saw that a seal was not moving as quickly as the others. The man went towards the last seal. It did not see him, but it moved into the water, too. The man stopped to sit down. He had a strange feeling. He felt water begin to fall from his eyes. He touched his eyes and tasted the drops. Yes, they tasted salty. Strange loud sounds were coming from his mouth and chest (胸膛). His wife and son heard that and ran to him. The man told them about the seals. He told how every seal ran away from him. As he spoke, water began to fall from the eyes of his wife and his son, and they cried with him. In this way, people first learned to cry.