【简答题】Dolphins ( 海豚 ) are not fish, but warm-blooded animals. They live in groups, and speak to each other in their own language. In this they are like other animals, such as bees and birds. But dolphins ar...
【单选题】(1) People today communicate in ways that earlier generations could have never dreamed of. (2) They can now speak to each other almost anywhere using cell phones. (3) _____, they communicate via e-mai...
【简答题】Dolphins are not fish. They are mammals (哺乳动物).They live in groups and speak to each other in their own language. But they are quite different from almost all land animals. Their brain(大脑)is as big as...