题干

下列有关说法正确的是(   )

A:工业生产硫酸时,接触室中采用高温高压条件都能提高SO2和O2的转化率

B:高铁酸钾(K2FeO4)是一种新型、高效、多功能水处理剂,既能消毒杀菌又能净水

C:阴离子交换树脂可以除去硬水中的Ca2+、Mg2+

D:工业上电解熔融AlCl3可制金属铝

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答案(点此获取答案解析)

B

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阅读下面材料,在空白处填入一个适当的单词或括号内单词的正确形式。(提示;每空不超过三个单词)

    Each different part of China has its own special forms of traditional art. These usually try to show the things____are important in life, such as love, beauty and family. The most common things, from paper to clay to bamboo, are turned into objects of beauty.

    According to Chinese history, sky lanterns were first used by Zhuge Kongming. He sent them out ____(ask)for help when in trouble. Today, sky lanterns are used at festivals and other celebrations. They____(make) of bamboo and covered with paper. When the lanterns are lit, they slowly rise into the air like small hot-air balloons for all to see. They are seen as bright symbols of____ (happy) and good wishes.

    Paper cutting____(be)around for over 1500 years. Paper cutting sounds very easy____it can be difficult to do. The paper, usually red, is folded before it is cut with scissors. The Most common pictures are flowers, animals, and things about Chinese history. During the Spring Festival, they are put on windows, doors and walls____symbols of wishes for good luck and a happy new year.

    Chinese clay art is famous because the clay pieces are so small but they look very real. The pieces are usually cute children or lively characters from a Chinese fairy tale or historical story. The pieces are____(careful)shaped by hand from a very special kind of clay and then allowed to air-dry. After____(dry) they are fired at a very high heat. They are then polished and painted. It takes several weeks____(complete)everything. These small pieces of clay art show the love that all Chinese people have for life and beauty.