【简答题】Part I Listening Comprehension In this section you will hear a talk. You will hear the talk Once Only. While listening, you may look at Answer Sheet and write No More Than Three Words for each gap. M...
【简答题】【 2019· 江苏卷, B 】 In the 1960s , while studying the volcanic history of Yellowstone National Park , Bob Christiansen became puzzled about something that , oddly , had not troubled anyone before:he coul...