【单选题】The Copperhead is a venomous serpent, found as far north as the Blue Hills in Massachusetts, and _____ bite has proved dangerous to hikers and joggers.
【单选题】听力原文:Why can't we go to the island today? (A) Because they were isolated that time. (B) We are expecting heavy rain today. (C) That' s why we couldn' t get there on time. (28)