Killer whales, also known as orcas, have a name that may make them sound especially dangerous. But with brains four times larger than human brains, killer whales are actually among the smartest creatures in the world.
The name “killer whale” is misleading. Before scientists began studying killer whales, they were known as dangerous, bloodthirsty monsters. But there is actually no record of any serious attacks by wild killer whales on humans at any point in history.
“Killer whale” is also misleading because the creatures are actually part of the family Delphinidae, meaning they are more like dolphins and porpoises than whales. Like common bottlenose dolphins, killer whales are intelligent and easy to teach, which is why you may see them doing tricks at aquariums or amusement parks.
By putting killer whales in captivity, scientists have learned a lot about them, and many people have been entertained by killer whale shows. But killer whales are at their healthiest and smartest when they remain free in the open ocean, where they travel up to 100 miles a day with their families, communicating with and teaching each other.
This passage mostly provides
A. facts about killer whales and their intelligence
B. facts about how killer whales are often kept in captivity
C. information on killer whales’ hunting habits
D. information on how to capture and train killer whales
Killer whales, also known as orcas, have a name that may make them sound especially dangerous. But with brains four times larger than human brains, killer whales are actually among the smartest creatures in the world.The name “killer whale” is misleading. Before scientists began studying killer whales, they were known as dangerous, bloodthirsty monsters. But there is actually no record of any serious attacks by wild killer whales on humans at any point in history.“Killer whale” is also misleading because the creatures are actually part of the family Delphinidae, meaning they are more like dolphins and porpoises than whales. Like common bottlenose dolphins, killer whales are intelligent and easy to teach, which is why you may see them doing tricks at aquariums or amusement parks.By putting killer whales in captivity, scientists have learned a lot about them, and many people have been entertained by killer whale shows. But killer whales are at their healthiest and smartest when they remain free in the open ocean, where they travel up to 100 miles a day with their families, communicating with and teaching each other.This passage mostly providesA. facts about killer whales and their intelligenceB. facts about how killer whales are often kept in captivityC. information on killer whales’ hunting habitsD. information on how to capture and train killer whales
การแปล กรุณารอสักครู่..
