题干

下列古代工艺或技术应用中一定含有化学变化的是(  )

A:钻木取火   

B:在甲骨上刻文字

C:用石块磨制石斧   

D:指南针指引航海

上一题 下一题 0.0难度 选择题 更新时间:2019-07-16 10:48:20

答案(点此获取答案解析)

A

同类题2

世界史是一部人类从专制到民主、从人治到法治不断进步的历史。请阅读材料,思考并回答问题。

材料一:公民大会是处理雅典事务的最高权利机构。它一年召开40次会议,如果需要的话,还召开临时会议如果需要的话,还召开临时会议。伯利克里还规定大部分公职实行薪给制,使贫民有可能担任公职。另外,他还建立许多由陪审团作最后决定的民众法庭,陪审法官由抽签产生,所有公民都可担任。雅典的民主宣扬全体公民共享和政治权利和义务,但实际上,只占有雅典六分之一的居民能享受到这种“民主”。掌握实权的只是工商业贵族上层。

──改编自美斯塔夫里阿诺斯《全球通史》

材料二:“确定议会为国家的最高权力机关,规定国王必须依法行使权利,无权废除法律,征税需经议会同意,议员有政治活动的自由。”

──川教版初中历史教材

材料三:……确认并宣布下达人与公民的权利:第一条 在权利方面,人们生来是而且始终是自由平等的,……第六条法律是公共意志的表现……法律对所有的人,无论是施行保护或处惩都是一样的。在法律面前,所有的公民都是平等的……第十七条,财产是神圣不可侵犯的权利……任何人的财产不得受到剥夺。

──《人权宣言》(1789年)

材料四:1787年制宪会议制定了一部资产阶级共和国宪法,宪法规定美利坚合众国的立法权属于国会,行政权属于总统,司法权属于最高法院。

──据九上课本改编

材料五:曼弗雷德•马伊在《一口气读完世界历史》中认为,1848年2月发表的某一文献,“对某些人来说,这是一个救世福音,对另外一些人说,它是一个魔鬼学说”。

请回答:

同类题5

阅读理解

    Cakan is a successful businessman from Montenegro, who has earned himself nicknames(昵称)like “the best boss” and “Brother” by being surprisingly generous to his employees.

    Cakan, who owns "Cakan Sports", the largest sporting goods store chain in Montenegro, has been making news headlines for years, but not for his professional success. He is best known for the generosity he shows to his faithful and hard-working employees. The businessman firmly believes that his company can boom only if he keeps his employees happy, and to that end, he has offered the best of them some pretty unbelievable presents.

    Cakan first surprised his workers back in 2012, when he offered four of them brand new cars — 2 VW Golf 6 and 2 VW polo — complete with paid insurance. They were some of the oldest and most hard-working employees of Cakan Sports, and since the company had recently moved its operations outside the city, Cakan thought his best people shouldn't have to struggle to get to work. "When we saw them, we were speechless," Danijela, one of the receivers, remembers. "While the boss was saying 'his is a gift for you', all I could think of was 'this is not real, this can't be happening to us'.” But this was just one of the generous ways Cakan has rewarded his employees over the years. In 2014, after hearing that one of his workers had been saving up his paychecks so he could buy a ticket to the world Cup soccer final, in Brazil, he took him there himself, at his own expense.

    Asked why he doesn't use cheaper means of motivating his employees, like a small raise or a cash bonus, Cakan had this to say, "Money comes and goes, but memories are forever." Asked why many of his employees call him "Brother", Cakan told a reporter that it was because "brothers always help each other".