题目

关于α粒子的散射实验解释有下列几种说法，其中错误的是(    ) A.从α粒子的散射实验数据，可以估计出原子核的大小 B.极少数α粒子发生大角度的散射的事实，表明原子中有一个质量很大而体积很小的带正电的核存在 C.原子核带的正电荷数等于它的原子序数 D.绝大多数α粒子穿过金箔后仍沿原方向前进，表明原子中正电荷是均匀分布的When another old cave is discovered in the south of France，it is not usual news．Rather，it is art ordinary event．Such discoveries are so frequent these days that hardly anybody pays heed to them．However，when the Lascaux cave complex was discovered in 1940，the world was amazed．Painted directly on its walls were hundreds of scenes showing how people lived thousands of years ago．The scenes show people hunting animals，such as bison or wild cats．Other images show birds and，most noticeably，horses，which appear in more than 300 wall images，by far outnumbering all other animals．Early artists drawing these animals accomplished a monumental and difficult task．They did not limit themselves to the easily accessible walls but carried their painting materials to spaces that required climbing steep walls or crawling into narrow passages in the Lascaux complex．Unfortunately，the paintings have been exposed to the destructive action of water and temperature changes，which easily wear the images away．Because the Lascaux caves have many entrances，air movement has also damaged the images inside．Although they are not out in the open air, where natural light would have destroyed them long ago，many of the images have been destroyed and are barely recognizable．To prevent further damage，the site was closed to tourists in 1963，23 years after it was discovered．【小题1】What can be the best title for the text?A．Wild Animals in ArtB．Hidden Prehistoric PaintingsC．Exploring Caves RespectfullyD．Determining the Age of French Caves【小题2】The underlined phrase“pays heed to”in Paragraph 1 probably means _____________．A．discoversB．watchesC．noticesD．buys【小题3】According to the text，which animals appear most often on the cave walls?A．BirdsB．BisonC．HorsesD．Wild cats【小题4】Why was painting inside the Lascaux complex a difficult task?A．It was completely dark inside．B．The caves were full of wild animals．C．Painting materials were hard to find．D．Many painting spaces were difficult to reach．【小题5】According to the text，all of the following have caused damage to the paintings except________________.A．temperature changesB．air movementC．water D．tourists