题目

听下面一段独白，回答以下小题。【1】When will the first trip start?A.In June. B.In April. C.In March.【2】How will the group travel to Birmingham?A.By train. B.By bus. C.By plane.【3】What does the speaker advise the group not to take during the first trip?A.Their cameras. B.Their student cards. C.Their mobile phones.【4】When can the group get copies of an information sheet?A.Over the weekend B.On Friday. C.This afternoon.在冬季，剩下半瓶热水的暖水瓶经过一个夜晚后，第二天拔瓶口的软木塞时觉得很紧，不易拔出来，其主要原因是（ ）A．软木塞受潮膨胀B．瓶口因温度降低而收缩变小C．瓶内气体温度降低而把瓶塞粘住D．瓶内压强减小，大气压把瓶塞压紧