题目

因为高速飞行会产生大量热，所以制造航天飞机使用了一些具有特殊性质的材料．2003年春天，美国的“哥伦比亚号”航天飞机失事，造成了巨大的损失，该航天飞机的外壳使用了石墨，这是利用了石墨的（ ） A．防辐射   B．难溶于水 C．熔点高，化学性质稳定 D．导电性 答案：【考点】碳单质的物理性质及用途． 【专题】碳单质与含碳化合物的性质与用途． 【分析】根据以往的知识进行分析，石墨的主要成分是碳，具有耐高温和化学性质稳定的性质． 【解答】解：航天飞机与空气的磨擦过程中会产生高温，覆盖的物质应该具有的性质是：熔点高、耐高温，化学性质稳定，阅读理解。Salvador Dali (1904-1989) was one of the most popular of modern artists. The Pompidou Centre in Paris is showing its respect and admiration for the artist and his powerful personality with an exhibition bringing together over 200 paintings, sculptures, drawings and more. Among the works and masterworks on exhibition the visitor will find the best pieces, most importantly The Persistence of Memory. There is also L’Enigme sans Fin from 1938, works on paper, objects, and projects for stage and screen and selected parts from television programmes reflecting the artist’s showman qualities.The visitor will enter the World of Dali through an egg and is met with the beginning, the world of birth. The exhibition follows a path of time and subject with the visitor exiting through the brain.The exhibition shows how Dali draws the viewer between two infinities (无限). “From the infinity small to the infinity large, contraction and expansion coming in and out of focus: amazing Flemish accuracy and the showy Baroque of old painting that he used in his museum-theatre in Figueras,” explains the Pompidou Centre.The fine selection of the major works was done in close collaboration (合作)with the Museo Nacional Reina Sofia in Madrid, Spain, and with contributions from other institutions like the Salvador Dali Museum in St. Petersburg.1.Which of the following best describe Dali according to Paragraph 1?A. Optimistic. B. ProductiveC. Generous. D. Traditional.2.What is Dali’s The Persistence of Memory considered to be?A. One of his masterworks.B. A successful screen adaptation.C. An artistic creation for the stage.D. One of the beat TV programmes.3. How are the exhibits arranged at the Wo rld of Dali?A. By popularity. B. By importance.C. By size and shape. D. By time and subject.4.What does the word “contributions” in the last paragraph refer to?A. Artworks. B. Projects.C. Donations. D. Documents.