He estimated that the comfort level will increase considerably in five to ten years3) One dog has been killed and multiple dogs have been injured by a snowmobile driver in what appears to be an intentional attack on competitors in the Iditarod Race in Alaska.
出自-2017年6月听力原文One dog has been killed and multiple dogs have been injured by a snowmobile driver in what appears to be an intentional attack on competitors in the Iditarod Race in Alaska.
2017年6月四级真题（第一套）听力 Section A