【单选题】听力原文: For those of us lucky enough to always have enough food and water, it may be hard to imagine living through a drought. A drought occurs for a variety of reasons, usually including a lack of rain...
【简答题】A.Because they consume enormous quantity of food and water. B.Because they have been caught for many hundreds of years. C.Because it has been noted that they have good memories. D.Because they are dif...