到了科学家的帮助，是有科学依据的，故选C项。

　　2．The underlined word "dazzling" in Paragraph 4 can best be replaced by " "．

　　A．doubtful　　　　　　　 B．worrying

　　C．terrible D．wonderful

　　解析：选D　词义猜测题。由该段中的"Within a few years, Bonestell's artwork was appearing regularly in magazines and books on astronomy and space flight."可知，结果喜人，Bonestell的画作在随后几年经常出现在关于天文学和太空探险的书刊杂志上，故选D项。

　　3．Bonestell's success lay in the fact that .

　　A．he created a new drawing skill

　　B．he helped finish the first space flight

　　C．he made space travel more popular

　　D．he helped bring space closer to people

　　解析：选D　推理判断题。由最后一段内容可知，在载人宇宙飞船探索太空之前，Bonestell的画让人们提前对太空有了了解并对之后的太空探险有所准备，所以他功不可没，故选D项。

　　4．What would be the best title for the text?

　　A．The first men on the Moon

　　B．The space art of Chesley Bonestell

　　C．The journeys of the Apollo astronauts

　　D．Spacewalking: through an astronaut's eyes

　　解析：选B　标题归纳题。本文主要介绍了太空美术大师Chesley Bonestell，故用B项作为标题最恰当。

　　B

　　Life can sometimes seem like an endless series of exhibitions. For those of us involved in the art world, there are times when we're constantly visiting gallery (画廊) after gallery, taking in as much as possible and getting to know the works of artists from

far and wide. But there are some artists whose works consistently stand out. Some artists' works stay in the thought and heart of an audience long after the show is over. I've noticed over the years that these are often the artists who have understood fully the skill of telling the story behind their art. These artists aren't just selling paintings - they're selling an experience.