二、(2024·扬州市宝应二模)阅读理解。
新素材 科普
知识 Beer and eggs are commonly seen in the kitchen. However, scientists recently found that they were used in historic paintings too.
To preserve (保存) Danish paintings, a group of researchers studied what ancient paints were made of. They did experiments on small pieces of paintings that had already been cut off from the original artwork.
According to their paper published in Science Advances, grains and yeast (酵母) were found on the base of the paintings. Beer was the most common drink in the 19th century in Denmark, and its by-products were spent grains and yeast. The study showed that they were used to provide a stable painting surface.
Researchers also pointed out that beer by-products were used as a "glue" because they had a lot of sugar. With beer added, the paints can also dry faster.
Apart from beer, egg has long been found in oil-based paints used by artists in the 15th century, such as Italian painter Leonardo da Vinci. A recent study published in Nature Communications may have "
cracked" the secret of how eggs can help preserve artworks.
The researchers recreated the ancient paints by adding egg yolks (蛋黄) to oil paints. They then looked into how they changed over time. The findings showed that the yolk protein helped slow the oxidation (氧化) of the paints. It could also reduce wrinkling (皱褶) as the egg makes the paints more smooth.
However, the oil paints with added egg usually takes longer to dry. It seemed fine for artists—they were willing to accept to have their works preserved for longer.
"The more we understand how artists choose and use their materials, the more we can appreciate (欣赏) what they're doing," Ken Sutherland, an expert at the Art Institute of Chicago, USA, told Science News. Sutherland added that research like this could help people have a deeper understanding of the artworks.
1. Why were beer by-products used in historic Danish paintings?
A. To help the colours stick better.
B. To keep the paintings clean.
C. To make the paintings more colourful.
D. To give the painting a different feel.
2. What does the underlined word "cracked" in Paragraph 5 probably mean?
A. kept
B. shared
C. discovered
D. explored
3. How could egg yolk protein change the paints?
A. The paints could age faster.
B. The paints could dry more quickly.
C. The paints' colours could be nicer.
D. The paints could feel smoother.
4. From Sutherland's words, we can know that
B
.
A. it's easy to appreciate artworks in the right methods
B. it's important to understand the minds of artists
C. it's hard to research early artworks
D. it's necessary to help people understand artworks