A. sensitive B. expectations C. commercially D. attempting E. stuck F. shelved G. relatively H. developing I. personal J. difficulties K. positive |
Sticky notes
This invention, commonly used in offices and households throughout the world, came about as a result of a series of accidents. In 1968, Spencer Silver, who was working for a company then called 3M, was
A few years later, Art Fry, a product development engineer working for 3M, decided to use this adhesive for
A. account B. contented C. contested D. date E. feature F. previously G. believably H. pointed I. represented J. stretches K. winds |
For centuries, two of the most intriguing question about Leonardo da Vinci’s “Mona Lisa” were “Who?” and “When?” A discovery made at Heidelberg University in 2005 pretty much answered both. A note written in a manuscript in the library confirmed the
A third mystery—“Where?”—is still in dispute, But on June 3rd a French engineer, Pascal Cotte, declared that he and a collaborator had identified the landscape in the background of the painting. Arguments had once been made for
Mr. Cotte, who was asked by the Louvre (where the “Mona Lisa” hangs) to create a digital image of the painting, is the inventor of the multispectral (多光谱的) camera: a device that can detect not only the drawing below the surface of an oil painting, but also, where they exist, intermediate layers of work. It was among these, under what appears to be a
The landscape of the “Mona Lisa” also includes a huge steep cliff. That is similar to one that da Vinci included in a sketch of a fortress(堡垒)
Mr. Cotte argues that a channel that
It never was. But if Mr. Cotte’s theory is right, it might just explain why Gherardini, a Florentine, wears such a
A. including B. impressions C. standing D. restored E. missing F. fun G. comfort H. associated I. inspired J. marked K. contact |
Ancient Civilizations Had Game Nights Too!
Morten Ramstad, a researcher at the University of Bergen, Norway, and his team spotted one of the rare objects while unearthing the remains of an Early Iron Age (400-300 BC) burial site in Western Norway. Burying loved ones with basic necessities like ceramic pots and clothing, to ensure their
Though the game board was
The archeologists, who also unearthed remains of pottery jars and a bronze needle at the burial site believe the game pieces indicate the dead was a wealthy individual. In ancient civilizations, board games were a status symbol, signifying the owner’s high social and economic
“These are status objects that bear witness to
The researchers planned to put the