There are approximately 36 dolphin species known to humans today, found in fresh and saltwater environments across the planet Earth. Dolphins are a member of the marine mammal group known as cetaceans, which also contain whales and porpoises. Because of the many similarities between dolphins, whales...
Male dolphins normally mate with various females consistently, yet females just mate each a few years. Calves are commonly brought into the world in the spring and mid-year months, and females bear all the duty regarding raising them—moms of certain species quick and attendant their young for ...
百度试题 结果1 题目)30. How many Chinese White Dolphins are there in the zoo? A.2500. B.40. C. 4. 相关知识点: 试题来源: 解析 答案见上 反馈 收藏
Dolphinsareveryfriendly.Sadly,therearenotmanykindsofdolphinsleft.Peoplekilledthemformanyyearsforfoodandotherthings.Nowit'stimetostopthisandperhapstherewillbemoreofthemintheyearstocome.(1)Ifadolphinweighs240kg,howmuchoffishmayiteateveryday? ___A.5kgB.16kgC.30kgD.35kg(2)Howdodolphinsfindthingsunder...
Dolphins are air-breathing animals that live in the sea. But how do they sleep? Giraffes have almost no deep sleep. Do they feel tired? Scientists studying seals (海豹) and dolphins have made a surprising discovery一these animals can sleep with one half of their brain while the other half...
aEarth surface waters are filled with life. The earliest life forms appeared in water; nearly all fish live exclusively in water, and there are many types of marine mammals, such as dolphins and whales. Some kinds of animals, such as amphibians, spend portions of their lives in water and ...
Dolphins are very friendly. Sadly, there are not many kinds of dolphins left. People killed them for many years for food and other things. Now it’s time to stop this and perhaps there will be more of them in the years to come. ...
【题目】用方框中所给的单词填空Dolphins are very ___. T hey can learn many things from people.--How about playing soccer after school?--T hatsounds ___.My brother doesn't want to do any homework and he is ___.T he yellow skirt looks very ___. I want to buy one for my ...
The four swimmers were finally out of danger.For Howes, it was a day he would never forget. He couldn’t thank his animal friends enough.【小题1】How many persons went swimming with Howes?A.2.B.3.C.4.D.5.【小题2】What were the dolphins doing when Howes saw them?A.Playing ...
aHow many countries can claim to have lions, penguins and dolphins all living within their borders? How many can offer safaris and surfing as easily as offering wine tastings and art galleries? 多少个国家能声称有狮子、企鹅和海豚所有生存在他们的边界之内? 多少能提供徒步旅行队和一样容易冲浪象...