①太和殿俗称金銮殿,高28米,面积2380多平方米,是故宫最大的殿堂。在湛蓝的天空下,那金黄色的琉璃瓦重檐屋顶,显得格外辉煌。殿檐斗拱、额枋、梁柱,装饰着青蓝点金和贴金彩画。正面是12根红色大圆柱,金琐窗,朱漆门,同台基相互衬映,色彩鲜明,雄伟壮丽。
②大殿正中是一个约两米高的朱漆方台,上面安放着金漆雕龙宝座,背后是雕龙屏。方台两旁有六根高大的蟠龙金柱,每根大柱上盘绕着矫健的金龙。仰望殿顶,中央藻井有一条巨大的雕金蟠龙。从龙口里垂下一颗银白色大圆珠,周围环绕着六颗小珠,龙头、宝珠正对着下面的宝座。梁枋间彩画绚丽,有双龙戏珠、单龙翔舞,有行龙、升龙、降龙,多态多姿,龙身周围还衬托着流云火焰。
③三大殿建筑在紫禁城的中轴线上,这条线也是北京城的中轴线,向南从午门到天安门延伸到正阳门、永定门,往北从神武门到地安门、鼓楼,全长约八公里。
④太和殿是举行重大典礼的地方。皇帝即位、生日、婚礼和元旦等都在这里受朝贺。每逢大典,殿外的白石台基上下跪满文武百官,中间御道两边排列着仪仗,皇帝端坐在宝座上。大殿廊下,鸣钟击磬,乐声悠扬。台基上的香炉和铜龟、铜鹤里点起檀香或松柏枝,烟雾缭绕。

非洲气候类型的分布规律是( )
﹣(2﹣
)0+(
)﹣2 .
+
=4.
①见到老师主动问好
②进老师办公室先敲门或喊“报告”
③与老师称兄道弟
④因为关心老师,所以打听老师的隐私 ⑤给老师起绰号
“青春不是人生的一段时期,而是心灵的一种状态”。①,心态上的年轻确是能够永远保持的。无论做人还是做事,方式可以沉稳持重,②,否则必定一事无成。只有保持年轻心态、葆守青春状态,才能自信若胸有成竹,勃发如沐浴春风。③,流淌出的不只是无穷的激情,更有坚忍不拔的意志,刚猛勇毅的魄力。

①当a=时,该粒子是原子,该原子位于元素周期表中第周期.
②当a=8时,该粒子是(填“原子”、“阳离子”或“阴离子”).
| 物质 | A | B | C | D |
| 反应前质量/g | 20 | 12 | 2 | 6 |
| 反应后质量/g | 0 | 2 | 2 | 待测 |
实验室模拟回收过程如下:

已知部分物质开始沉淀和沉淀完全时的pH如下表:
物质 | 开始沉淀 | 沉淀完全 |
Fe(OH)2 | 7.6 | 9.6 |
Fe(OH)3 | 2.7 | 3.7 |
Cu(OH)2 | 4.4 | 8.0 |
请回答下列问题:
①步骤Ⅲ的操作名称是.
②下列试剂中,可以作为试剂a的是.
A.HNO3溶液 B.Fe2(SO4)3溶液 C.FeCl3溶液
③若不加试剂b,直接加入试剂c调节溶液pH,是否可行?(填“是”或“否”),理由是.
已知:2H2O2(l)=2H2O (l)+O2(g)△H1=﹣196kJ/mol
H2O(l)=H2(g)+
O2(g)△H2=+286kJ/mol
Cu(s)+H2SO4(aq)=CuSO4(aq)+H2(g)△H3=+64kJ/mol
则Cu(s)+H2O2(l)+H2SO4(aq)=CuSO4(aq)+2H2O(l)△H=.
Sara Savick remembers one special Easter when she was nine years old. Her parents gave her a baby duckling in a yellow basket.
“Mom said later that she bought the little duck because she felt sorry for it,” recalled Sara. The people at the pet store colored the feathers pink for Easter. Sara named the duck Pinky.
Sara's mother really didn't think the baby duck would survive very long. But to her surprise, Pinky grew and got stronger and stronger. Soon, the little duckling was a healthy, hungry duck with white feathers.
“We fed Pinky oatmeal, cooked and uncooked, and small pieces of vegetables,” said Sara. Pinky lived inside the house with Sara and her family. She specially fancied taking baths with Sara. Everyone treated Pinky as a family member.
But just when everything appeared to be perfect, the night of the “talk” came. Sara's Mom and Dad sat her down, explaining that the best thing for Pinky was to live a normal duck life, with other ducks. It was not natural for ducks to live indoors with a family, her father told her. He added Pinky needed to swim in ponds and do all the same things that ducks in the wild do.
Sara started to cry, knowing what was going to happen. Sara's parents decided to take Pinky to a park, which was two miles away. There was a pond with a lot of other ducks. Pinky would have the chance to live a natural life and Sara could still visit her.
The big day came, Sara and her parents put Pinky in a box and drove to the park. Sara said that Pinky did not look happy; maybe Pinky was convinced that she was a human, not a duck.
注意:1)词数应为150左右;
2)请按如下格式作答。
Everyone was sad when they left Pinky at the pond, even Sara's father.
The next morning, when looking out of the kitchen window, Sara couldn't believe her eyes! tightly, tears streaming down her cheeks.
如图,AB∥CD,OE平分∠BOC,OF⊥OE,OP⊥CD,∠ABO=a°,则下列结论:
①∠BOE=
(180﹣a)°;②OF平分∠BOD;③∠POE=∠BOF;④∠POB=2∠DOF.
其中正确的个数有多少个?( )

①加强对政府财政预算的管理和监督,促使政府依法行政
②政府由行使经济立法权转向行政执法
③政府坚持对人民负责的工作原则
④确保我国人民成为社会主义国家的主人,以行使监督权
a>0”的否定为假命题,则实数a的取值范围是.