实验室里制CO₂的主要操作步骤的序号是 ____　．

A．向上排空气法收集

B．检查装置的气密性

C．把盐酸加入到反应容器中

D．将大理石加入到反应容器中

中国近代以来第一个彻底的反帝反封建的民主革命纲领诞生于（    ）

通读全文，理解大意，从各题所给的选项中选择可填入短文的最佳选项。

Nowadays, millions of Chinese leave the countryside to search for work in the cities. They usually go back to1once or twice a year. Zhong Wei is one of them.

Zhong Wei has lived in Wenzhou for the last 13 years. With a hard job in a crayon factory, he is too busy to find2to visit his hometown.

Many people like Zhong Wei regard with great interest 3their hometowns have changed. Perhaps large hospitals and new roads have appeared. In many places, the government has also built 4and sent teachers from the cities to help.

ZhongWei thinks such development are very good, and these changes will take place in his hometown because some things need to change in order to become 5.

He also thinks among all the changes, some things are6to change, such as the soft and sweet memories of the hometown in people's hearts. That is why people try to find time to go back to visit their hometowns though they are very busy.

下列词语中，字形和加点的字的读音全都正确的一项是

填入下面横线处的语句，衔接最恰当的一项是（  ）
春秋笔法作为中国历史叙述的一个传统，来源于据传为孔子所撰的《春秋》。        书中不少地方揭示了权势者暴虐淫侈的行为，也表彰了许多忠于职守、正直和具有远见的政治家，反映出儒家的政治理想。
①左传继承和发扬了这一精神，在叙事中敢于直言不讳，往往以“礼也”“非礼也”来评判人物或其行为，表现了鲜明的政治与道德倾向。
②它的观念较接近于儒家，强调等级秩序与宗法伦理，重视长幼尊卑之别，同时也表现出“民本”思想。
③“褒贬劝惩，各有义例”，有时一字暗含褒贬。
④它从当时的伦理道德出发，以定名分、明等级作为评判人物和事件的标准。
⑤由此就形成了所谓的“春秋笔法”“微言大义”。