题目

阅读理解 A kind of blue dye (颜料) called folium had been widely used to paint pictures on the pages of manuscripts (手稿) created in the Middle Ages. But long ago, this watercolor fell out of use. "Manuscripts are an important part of the cultural works of art in the Middle Ages," said scientist Maria in an email to CNN. "Color is a basic feature of these manuscripts. To let ancient manuscripts. keep a good condition for future generations, we sometimes need to repaint their inside pictures through the ancient dye — like folium — that was once used in these manuscripts. But everyone who knew how to prepare folium had died long ago. So 'I led a team to study this dye." Her team turned to books from the 1400s and found one that described the plant that was its source. It is a tiny plant with silvery-green leaves. Days later, the scientists reached a village in south Portugal, where nobody knew this little plant. However, after carefully going through a plenty of different plants growing there, the scientists finally raked out the plant they wanted and brought some back to their laboratory. Back in the lab, the scientists produced the dye with the help of an ancient text on colors. The text has clearly described the ways to make it. "It's cool to have done that work of looking in the historical records and traveling back in time," says Casadio, who was not part of this study. It recreates an ancient process. By making the dye, the scientists could study its chemistry without experimenting on priceless delicate (易损的)  works of art, she points out. Now, the researchers don't know the dye's stability(稳定性)and its ability against the environment that may wear and break it down over time. "To know such information is necessary if we desire to make these colors last long enough," Maria said. "So our study will continue." （1） What do we know about folium from the first two paragraphs? A . It is very easy to make with modem technology. B . It is a dye found by chance many years ago. C . It was a popular dye lost in history. D . It was very expensive in ancient times. （2） What do Maria's words in her email to CNN mainly imply? A . It's important and meaningful to study folium. B . It's difficult to learn about the usage of folium. C . It's necessary to find something to replace folium. D . It's common to study folium through manuscripts. （3） What does the underlined phrase "raked out" in Paragraph 3 probably mean? A . Bought. B . Studied. C . Discovered. D . Planted. （4） What's the advantage of Maria' s way to make folium according to Casadio? A . Being easy and safe to carry out. B . Reducing the cost of production. C . Avoiding possible damage to artworks. D . Increasing people's interest in painting. 答案： C B C C

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