I live in Canada. 可知主人公Sally住在加拿大。故选B。 (2)根据I plan to go to Beijing, Hangzhou and Xi'an next month by plane.可知主人公Sally坐飞机去那里。故选A。 (3)根据I plan to go to Beijing, Hangzhou and Xi'an next month by plane.可知主人公打算去北京,杭州和西安下个月。故选C...
Tyrannosaurus rex, (Tyrannosaurus rex), species of predatory dinosaurs that lived during the end of the Cretaceous Period (about 66 million years ago) known from fossils found in the United States and Canada dating to between about 80 million and 66 million years ago. Tyrannosaurus rex is the ...
An artist rending of aT-rex. The largest one named Scotty was discovered in Canada's Badlands. It's on display at the Royal Saskatchewan Museum in Canada.SCIEPRO / Getty Images Most people assume that the North AmericanTyrannosaurus rex—at 40 feet from head to tail and seven to nine tons...
Even many years after it has been cut, hair can tell surprising secrets. Because hair is made from bits of old cells, it has trace (微量) of chemicals (化学物质) that were in the body when the hair grew. When people are kept in the situation of dangerous chemicals, these traces remain...
Anchiornis, a small, feathered, four-winged dinosaur that lived in China around 160 million years ago, is a key link as dinosaurs transformed into birds. The gene deletion, according to the researchers, happened around 145 million years ago, millions of years later than Anchiornis lived, so th...
Abelisauruswas a large, bipedal predatory dinosaur that lived in South America during the Late Cretaceous. It is thought to have hunted the huge titanosaurs that also inhabited South America during this time. All that we know aboutAbelisauruscomes from a single skull fossil. The specimen was ...
Abelisauridae is a family of theropod dinosaurs that lived in Africa, South America and Asia during the Cretaceous period. This type of dinosaur typically had powerful hind legs and extremely short forelimbs. Their skulls were short in length, but tall, and often had grooves or projections (...
What dinosaurs lived in Ontario, Canada? What is the oldest dinosaur found that had feathers? What animals went extinct in the Mesozoic era? Which era saw the emergence of dinosaurs? What was on Earth before dinosaurs? What major animal group flourished only after the dinosaurs became extinct?
Parasaurolophus is a dinosaur that lived about 76 million years ago during the Late Cretaceous Period. It was first discovered in 1922 in Alberta, Canada by Dr. William A. Parks. He named it Parasaurolophus, a name which means “crested lizard”. A name he gave the animal because of its ...
and evolved to plus sizes only after they settled in North America, tens of millions of years later. The importance of the newly discovered, two-foot-long Aquilops("eagle face") is that it lived in middle Cretaceous North America and thus represents an important link between early and ...