题干

战国时《周礼》中记载沿海古人“煤饼烧蛎房成灰”(“蛎房”即牡蛎壳),并把这种灰称为“蜃”。“ 蜃”与草木灰、水混合后,经一系列操作得晶体M,M的溶液可用于造纸过程树皮脱胶。下列说法错误的是(    )

A:“蜃"的主要成分为CaO

B:“煤饼烧蛎房成灰“过程中只涉及分解反应

C:经提纯后,晶体M的焰色反应星浅紫色

D:“一系列操作“指的是过滤、蒸发、结晶、过滤

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答案(点此获取答案解析)

B

同类题4

根据短文理解,选择正确答案。

    My friend BJ Gallagher told me a great story recently, about her own experience with resentment (愤恨). She once worked as the training manager for a large newspaper, where she found the corporate culture extremely frustrating. The company was a hundred years old and their past success ha d blinded them to the need for change. Finally, after butting heads with several senior executives (主管) many times, she left the company. But she found that she hadn't left her resentment, frustration, and anger behind when she resigned.

    “I finally decided to write about my experiences and my feelings at the newspaper. I wanted to be rid of that company and those people, once and for all. So I wrote and I wrote. It wasn't just a story that poured out; it was a whole book! We called it A peacock in the Land of Penguins. I was the peacock and those newspaper executives were the penguins.”

    “It took me several more years to finally get over my negative emotions. Through a lot of soul-searching and reflection, I finally was able to let go of my resentment. I came to see that there was nothing personal in the way they treated me, and they were good people doing what they thought best for the company. I was the one who had made it personal. I thought they were making my life miserable on purpose.”

    “Finally, the time came when I decided to make amends (弥补) for the sharp, angry things I had said about the company. I invited my former boss to dinner and made my apology. It was a great healing process for me. I finally felt free of the resentment that had been eating me up.”

    “What was the final outcome?” I asked her.

    “Gratitude,” she replied. “Not only wasn't I resentful any more, I was grateful to the company. If I hadn't had those painful experiences, I would never have written a book. And the book became hugely successful – now published in 21 languages; it transformed my business.”

同类题5

阅读下面的文言文,完成下面小题。

    赵孟頫(頫fǔ),字子昂,幼聪敏,读书过目辄成诵,为文操笔立就。至元二十三年,侍御史奉诏,搜访遗逸于江南,得孟頫,以之入见。孟頫才气英迈,世祖顾之喜,使坐于右丞叶李上。御史中丞奏:“孟颜亡宋宗室,不宜侍左右。”钜夫日:“任人唯贤,乃陛下之盛德,此言将陷臣于不忠。”帝日:“然,彼何知!”命左右宣救逐之出。

    二十七年,拜集贤直学士。是岁地震,北京尤甚。帝幸龙虎台,深忧之。召问集贤、翰林两院官致灾之由。两院官畏桑哥,莫敢言。孟頫与平章阿刺浑撒里甚善,日:“今理算钱粮,民不聊生。地震之变,殆由于此。宜大赦天下,尽与蠲(juān)除,庶几天变可弭。”阿刺浑撒里入奏,帝从之,草诏已俱。桑哥怒谓必非上意。孟頫曰:“凡钱根木征者,其人死亡已尽,何所从取?不及是时免之,他日言事者倘以失陷钱粮数千万归咎尚书省,丞相何以自解?”桑哥悟,乃日:“吾料不及此。”诏下,民大悦,成额手相庆。

    中书参知政事贺胜以不通文字,请帝早简辅相。帝周视左右乃属目于孟頫曰卿可至中书参决庶务孟頫固辞帝问阎复宋渤何如孟頫对曰皆非相才。诏孟頫出入宫门无禁,且谓孟頫曰:“朕年老,聪明有所不逮。大臣奏事,卿必与俱入。或欺罔,卿即为朕言之。”孟頫谢不对,后乃力请补外。

    初,孟頫用程钜夫荐起家,后钜夫以翰林学士承皆致仕。孟頫代之,先往拜钜夫,而后入院,时人称为衣冠盛事。六年,谒告归。帝遗使赐衣币,趣之还朝,以疾,不果行。至治元年卒,年六十九。追封魏国公,谥文敏。

(节选自《元史·赵孟頫传》)