Welcome to Mr Aslanov’s Lessons QUESTION-TYPE BASED TESTS FunEnglishwithme +99894 6333230
G. Several groups of dinosaurs survived that extinction, and the footprints show that new groups
emerged soon afterward. Before the extinction, about one-fifth of the footprints were left by dinosaurs; after
the extinction, more than half were from dinosaurs. The changes, the researchers said, occurred within
30,000 years geological blink of an eye. The scientists postulate that the asteroid or comet impact and the
resulting death of Triassic competitors allowed a few groups of carnivorous dinosaurs to evolve in size very
quickly and dominate the top of the terrestrial food chain globally.
H. Among the creatures that disappeared in the extinction were the dominant predators at the time:
15-footlong rauisuchians
with great knife-like teeth and phytosaurs
that resembled large crocodiles.
Dinosaurs first evolved about 230 million years ago, but they were small, competing in a crowded ecological
niche. Before the extinction 200 million years ago. the largest of the meat-eating dinosaurs were about the
see of large dogs. Not terribly impressive." Dr. Olsen said. The dinosaurs quickly grew. The toe-to-heel
length of the foot of a meat eater from the Jurassic period was on average 20 percent longer than its Triassic
ancestor. Larger feet can carry bigger bodies; the scientists infer the dinosaurs doubled in weight, eventually
evolving into fearsome velociraptors, Tyrannosaurus rex and other large carnivorous dinosaurs.
I. The spurt in evolution is similar to the rise of mammals after the extinction of dinosaurs. Mammals,
no larger than small dogs during the age of dinosaurs, diversified into tigers, elephants, whales and people
after the reptilian competition died away. The success of the dinosaurs after the Triassic-Jurassic
extinction may be why they did not survive the second extinction. "Small animals always do better in
catastrophic situations. Dr. Olsen said, because they can survive on smaller amounts of food." He also
pointed out that scientists now believe the small dinosaurs did survive. "We just call them birds," he said.
Questions 1-7 Do the following statements agree with the information given in Reading Passage? True if the statement agrees with the information False if the statement contradicts the information NOT GIVEN If there is no information on this