【简答题】Honeybees are disappearing for unknown reasons around the United States.Last winter, bees disappeared from 23 percent of American beekeeping businesses.Causes of the phenomenon, however, have remained...
【简答题】阅读理解。 There are varieties of bee in the world. Scientists are interested in honeybees because of the 'language' they use to communicate with each other. Karl von Frisch, a professor from Austria, devo...