题目内容

【题目】听下面一段对话,完成五道小题,每小题填写一个词这段对话你将听两遍。

【答案】

(1) Paris

(2) Chinese and Western

(3) color sense

(4) 72

(5) touch people's hearts

【解析】听力原文:

A Chinese painting is usually thought of as work of ink and water on rice paper. But a new generation of Chinese artists is drawing inspiration from Western art to develop a different style. Wu Guanzhong (1919--2010), is one of those who have borrowed foreign ideas while staying true to his cultural traditions. Wu studied Western painting in Paris in the 1940s. He formed his own ideas about modern Western art. He started to bring together Chinese and Western elemetns in his work. Wu's paintings have the color sense and principles of Western paintings, with the spirit and tonal variations(色调变化)of ink that are typical of Chinese artwork. Under his brush, natural scenery is reduced to its basics, in simple but powerful forms.

Wu's paintings now sell for record prices. He gave 72 works of art to Zhejiang Museum of Art and China Academy of Fine Arts earlier this month.

"Wu has written a special chapter in the Chinese art history of the 20th century." said Qian Linxiang, deputy director of the National Art Museum of China in Beijing. "His paintings go between oil painting and ink painting, and draw Western art into the poetic Chinese style."

"My tutor Jean Souverbie once said there are two paths for artists." said Wu, "The narrow path, that is to please, and the broad one to touch people's hearts. I wanted to take the broad one."

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【题目】1乙氧基萘是一种无色液体,密度比水的大,不溶于水,易溶于乙醇,熔点为5.5℃,沸点为267℃。1萘酚(性质与苯酚相似)的熔点为96℃,沸点为278℃,微溶于水,易溶于乙醇。乙醇的沸点为78.5℃。1乙氧基萘常用作香料,也可合成其他香料。实验室制备1乙氧基萘的反应原理如下:

(1)将72g1萘酚溶于100mL无水乙醇中,再加入5mL浓硫酸。将混合溶液置于如图所示的圆底烧瓶中加热充分反应。实验中使用过量乙醇的原因是________。烧瓶上连接长玻璃管的主要作用是________________。

(2)反应结束后将烧瓶中的液体倒入冷水中,经处理得到有机层。为提纯产物有以下四步操作:①蒸馏;②水洗并分液;③用10%的NaOH溶液洗并分液;④用无水氯化钙干燥并过滤。正确的顺序是________(填序号)。

A.③②④① B.①②③④ C.②①③④

(3)实验测得1乙氧基萘的产量与反应时间、温度的关系如图所示,时间延长、温度升高,1乙氧基萘的产量下降的原因可能是__________、____________。

(4)某同学推测经提纯的产品可能还含有1萘酚、乙醇、硫酸和水等杂质,设计了如下方案进行检验,请完成表中内容。

实验目的

实验操作

预期现象和结论

①用金属钠检验1乙氧基萘是否纯净

取少量经提纯的产品于试管A中,加入金属钠

若________,则产品纯净;

若________,则产品不纯

②检验经提纯的产品是否含有1萘酚

____________

____________

若____________,则含有1萘酚;

若____________,则不含1萘酚

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