|http://www.sina.com.cn 2004/11/23 21:47 空中美语|
We all know that dogs, pigs, and monkeys are very intelligent animals. But when it comes to underwater intelligence,1 no animal is smarter than the dolphin. No one knows for sure how smart dolphins are, but we do know they are fast learners. They can perform2 many amazing3 tricks, such as ringing bells with their snouts, shaking hands with their flippers, and taking bows. They can even act. In the movie Flipper, a dolphin was the main star!
Because most dolphins live in the ocean, you might think they’re fish. Actually, they are mammals, just like people. That means they grow hair, give milk to their young, and breathe air. Every so often, the dolphin must rise to the surface and breathe through its blowhole. Like land animals, dolphins can’t drink salt water. They get most of their fresh water from their food. So even though dolphins live underwater, they survive4 just like desert5 animals, with no direct source6 of drinking water.
1. intelligence n. the measure of how smart sb./sth. is 智能；智力
Only people with very high intelligence can understand this difficult kind of math.
2. perform v. to do sth. interesting, exciting, funny, etc. for others’ enjoyment 表演；演出
We have tickets to see a famous singer perform at the concert hall tonight.
3. amazing adj. very impressive and/or surprising 令人惊讶的
It’s amazing that you weren’t injured after falling off of such a high ladder.
4. survive v. to continue living despite difficult conditions 幸存；生存
Without special equipment, astronauts would not be able to survive in outer space.
5. desert n. a very dry area that doesn’t have much plant or animal life 沙漠
If you decide to go hiking in the desert, make sure to carry extra food and lots of water.
6. source n. a person, place, or thing that provides sth. which sb./sth. needs 来源
In Ireland, potatoes have been an important food source for hundreds of years.
1. snout n. （动物的）口部位
2. flipper n. （海豚、企鹅等的）鳍状肢
3. mammal n. 哺乳动物
4. blowhole n. 气孔 （位于海豚头顶，用以呼吸）