A. fallen down B. knocked out C. run over D. tripped up 参考答案:C 答案解析:昨晚他被一辆三轮车碾伤而送往医院。fall down(on sth.)“(口)失败,未做到”;knock out:“打倒,打昏”; run over“在……驶过,(撞倒并)碾过;把……很快地(或粗略地
第18题: [单项选择]Passage One Questions 26 to 29 are based on the passage you have just heard.[A] At the airport. [C] Taking the air. [B] By plane. [D] On radio and TV. 参考答案:D 答案解析:[听力原文] What does "on the air" here mean