用于清洁矫治器、牙周夹板等的牙刷是（）。 A．电动牙刷 B．通用型牙刷 C．波浪形牙

上市公司出现以下（）情形之一，证券交易所对其股票交易实行退市风险警示

A．最近2年连续亏损

B．因财务会计报告存在重大会计差错或虚假记载，且公司股票已停牌2个月

C．因财务会计报告存在重大会计差错或虚假记载，公司主动改正或被中国证券监督管理委员会责令改正，对以前年度财务会计报告进行追溯调整，导致最近2年连续亏损

D．因财务会计报告存在重大会计差错或虚假记载，被中国证券监督管理委员会责令改正，在规定期限内未改正，且公司股票已停牌2个月

低钾性碱中毒常出现于

A．尿毒症

B．胃肠减压

C．术后少尿

D．挤压创伤

E．输血过量

I have just come home after viewing some astonishing works of art that were recently discovered in Church Hole cave in Nottinghamshire. They are not drawings, as one would expect, but etchings, and they depict a huge range of wild animals. The artists who created them lived around 13,000 years ago, and the images are remarkable on a variety of counts. First of all, their sheer number is staggering. There are ninety all together. Moreover, fifty-eight of them are on the ceiling. This is extremely rare in cave art, according to a leading expert, Dr. Wilbur Samson of Central Midlands University. "Wall pictures are the norm," he says. "But more importantly, the Church Hole etchings are an incredible artistic achievement. They can hold their own in comparison with the best found in continental Europe." I am not a student of the subject, so I have to take his word for it. However, you do not have to be an expert to appreciate their beauty.

In fact, it is the wider significance of the etchings that is likely to attract most attention in academic circles, since they radically alter our view of life in Britain during this epoch. It had previously been thought that ice-age hunters in this country were isolated from people in more central areas of Europe, but the Church Hole images prove that ancient Britons were part of a culture that had spread right across the continent. And they were at least as sophisticated culturally as their counterparts on the mainland.

An initial survey of the site last year failed to reveal the presence of the etchings. The reason lies in the expectations of the researchers. They had been looking for the usual type of cave drawing or painting, which shows up best under direct light. Consequently, they used powerful torches, shining them straight onto the rock face. However, the Church Hole images are modifications of the rock itself, and show up best when seen from a certain angle in the natural light of early morning. Having been fortunate to see them at this hour, I can only say that I was deeply and unexpectedly moved. While most cave art often seems to have been created in a shadowy past very remote from us, these somehow, convey the impression that they were made yesterday.

Dr. Samson feels that the lighting factor provides important information about the likely function of these works of art. "I think the artists knew very well that the etchings would hardly be visible except early in the morning. We can therefore deduce that the chamber was used for rituals involving animal worship, and that they were conducted just after dawn as a preliminary to the day’s hunting."

To which I can only add that I felt deeply privileged to have been able to view Church Hole. It is a site of tremendous importance culturally and is part of the heritage, not only of this country, but the world as a whole.

What conclusions does Dr. Samson draw from the lighting factor？（）

A．Animal worship rituals were common in the morning.

B．The artists never intended to make the images visible.

C．The images were intended for early morning rituals.

D．Ice-age hunters used torches in worshipping animals in the cave.

左图为我国国民经济中各种经济成分所占比重示意图，右图为某国有企业专业技术人员张某的收入构成示意图。

图一                                          表二

（1）两张示意图分别反映了我国正在实行怎样的制度?（2分）从图一中可以看出，在我国哪一种经济形式占主体地位？（1分）

（2）实行表二的经济制度的意义是什么？（2分）

近年来，中小学教科书内容的调整引起社会广泛的关注。鲁迅、朱自清、茅盾等作家的作品不断减少，而武侠等一些作品则堂而皇之地登上了“大雅之堂”。国家重视教科书篇目的审订表明（）

①文化具有多样性，应尊重文化指导思想的多样性

②教育有选择、传递、创造文化的特定功能

③教育在人的教化与培育上扮演着重要的角色，关乎世界观、人生观、价值观文化核心素养的形成

④教育是推动文化创新发展的源泉

A.①

B.①②

C.②③

D.③④