A skull of the dinosaur, named Guemesia ochoai, was discovered in Argentina. Researchers said it likely belongs to a meat-eating, or carnivorous, group of dinosaurs     1     (call) abelisaurs. These dinosaurs walked on two legs and had very short arms, even     2     (short) than those of North America’s Tyrannosaurus rex. The short arms may have forced Guemesia     3     (depend) more on its powerful skull and jaws.

“Guemesia is so different     4     other meat-eating dinosaurs, which allows us to understand that we’re dealing with a     5     (total) new species,” said Agnolin Federico, the lead writer of a study on the dinosaur that was published in the Journal of Vertebrate Paleontology.

The animals existed for a few million years before     6     asteroid (小行星) hit what is now Mexico’s Yucatan peninsula. That event, about 66 millions years ago, led to a series of     7     (disaster) that killed all the dinosaurs and many other animals. In total, about 75 percent of Earth’s species     8     (destroy) as a result of the asteroid.

Scientists believe abelisaurs lived on what is now Africa, South America and India. Several abelisaurs have been dug up in Argentina in the past but almost all of them were in southern Patagonia, far from the site     9     Guemesia was found.

Guemesia takes its name from Argentine independence hero Martin Miguel de Guemes and Javier Ochoa, a museum worker who made the     10     (discover).

Archaeologists have uncovered a collection of 3,000-year-old handicrafts at Sanxingdui, Sichuan province. The researchers found more than 500 objects at the site in 2019, most of    1    were carved out of gold, bronze, jade and ivory.

Experts are unsure who made the handicrafts, but they guess that the creators belonged to the Shu state, a    2    (high) skilled civilization conquered by the neighboring state of Qin in 316 B.C. Because the people of Shu left behind few    3    (write) records, historians’ knowledge of their culture is limited.

A major highlight of the find is a 0.6-pound fragment (碎片) of a gold mask that may have been used    4    (wear) during religious ceremonies. About 84 percent pure gold, the piece likely weighed close to one pound in total,     5    (make) it one of the heaviest gold masks from that time period discovered in China to date.

Other    6    (discovery) made at the site included two kinds of silk. Silk has played    7    important role in China’s long history. As the statement points out, the silk was thought to serve    8    a carrier by the ancient inhabitants of Sanxingdui for communication between heaven, earth, man and god. The presence of silk at Sanxingdui     9    (indicate) that the ancient Shu Kingdom is one of the important origins of silk in ancient China. All these findings enrich and     10    (deep) our understanding of the Sanxingdui culture.