题目

听下面一段对话，回答问题。 （1） What's wrong with the man? A . He is very tired. B . He has got a cold. C . He is seriously ill. （2） What does the woman suggest the man do? A . Have a good rest. B . Go to hospital. C . Try some exercise. （3） What may the man begin to do? A . Ride a bike. B . Go to the gym. C . Take the stairs. 答案：B C C在同一幅等高线图上A、相邻两条等高线的数值差（即等高距）相等 B、闭合等高线的中心肯定是盆地 C、等高线越密集，表示地形越平坦 D、等高线越稀疏，表示地势起伏越大