问题 选择题

下列有关物质的性质或应用说法正确的是

A.糖类、油脂、蛋白质在一定条件下均可以水解

B.SiO2既能溶于NaOH溶液又能溶于HF,说明SiO2是两性氧化物

C.从海水中得到氯化镁晶体,电解氯化镁晶体可获得金属Mg

D.锅炉水垢中含有的CaSO4,可先用Na2CO3溶液处理,后用酸除去

答案

答案:D

分析:A、糖类分单糖、二糖和多糖,单糖不水解.

B、根据碳酸钡的性质分析.

C、活泼金属的冶炼方法是电解法.

D、根据沉淀的转化分析.

解:A、糖类分单糖、二糖和多糖,单糖不水解,二糖、多糖、油脂、蛋白质在一定条件下均可以水解,故A错误.

B、碳酸钡是弱酸盐,能和盐酸反应,但硫酸钡既不和酸反应也不和碱反应,所以医疗上可用BaSO4作X射线透视肠胃的内服药剂,故B错误.

C、镁是活泼金属,所以镁的冶炼方法是电解氯化镁,但必须是电解熔融态的氯化镁不是氯化镁晶体,故C错误.

D、硫酸钙是微溶性的物质,能和碳酸钠反应生成难溶性的碳酸钙,碳酸钙和盐酸能反应,所以锅炉水垢中含有的CaSO4,可先用Na2CO3溶液处理,后用酸除去,故D正确.

故选D.

阅读理解

阅读下列短文,从每题所给的四个选项(A、B、C和D)中 ,选出最佳选项,并在答题卡上将该项涂黑。

A

Chinese writer Mo Yan has won the 2012 Nobel Prize in Literature, announced the Swedish Academy in Stockholm on Thursday.The win makes Mo Yan the first Chinese citizen to win the Nobel in its Ⅲ-year history.Informed of his win today, the author, who was having dinner at home, was “overjoyed and scared".

Born in 1955 to parents who were farmers, Mo Yan-a pen name for Guan Moye,grew up in Gaomi in Shandong province in eastern China. At the age of 12, he left school to work, first in agriculture, later in a factory. In 1976 he joined the army and during this time began to study literature and writing.

He published his first book in 1981, but found literary success in 1987 with Hong Gaoliang Jiazu, which was successfully filmed in the same year, directed by famous Chinese director Zhang Yimou. In his writing, Mo Yan draws on his youthful experiences and on settings in the province of his birth and his works show the life of Chinese people as well as the country's unique culture and folk customs. Mo Yan is known as a prolific(多产的 )writer. In addition to his novels, he has published many short stories and essays on various topics. Despite his social criticism, he is seen in his homeland as one of the most famous contemporary authors. Dozens of his works have been translated into English, French, Japanese and many other languages.

The awarding ceremony will be held on December 10.The winner will win a medal, a personal diploma and a cash award of about $l  million.

小题1:How did Mo Yan feel when he was told about the news?

A.Excited and proud.

B. Happy and surprised.

C.Worried and cautious

D. Uncertain and shocked.小题2:Mo Yan developed his ability for writing when he was      .

A.on a farm

B.in a factory

C.in a school

D.in the army小题3:One of Mo Yan's characteristics of writing is that he

A.writes about topics he is familiar with

B.focuses on social problems in the country

C.describes his characters in a unique way

D.explains difficult matters in simple words小题4:What's the best title for this passage?   

A.How Mo Yan Gets Nobel Prize

B.An Introduction to Nobel Prize

C.Mo Yan Wins Nobel Prize in Literature

D.A World Famous Writer, Mo Yan

多项选择题