题目

 我国东部地区经常发生洪涝灾害的最主要原因是 A.地势西高东低，水流湍急 B.影响我国的夏季风强弱不同 C.全球气候变暖的影响 D.台风的影响所致 答案：B— Have you ever been anywhere for a trip?— A trip? I ________ away from my hometown even once.A.wentB.have goneC.have beenD.have never been