单项选择题
Flying foxes tend to（）
A．double their number every year B．lose a lot of their babies C．move from place to place constantly D．fight and kill a lot of themselves
单项选择题 The passage tells us that there is no difference between, the flying fox and the ordinary hat in （）
单项选择题 How do flying foxes care for the young ones （）
单项选择题 Which of the following statements is true（）
