【Betty-邀請碼1841】評論

The athlete was left disappointed after making multiple ____ attempts to break the world record, with each unsuccessful try further diminishing his hopes.這位運動員在多次嘗試打破世界紀錄________後感到失望，每一次不成功的嘗試都進一步減少了他的希望。 (A) abortive - 失敗的、無果的。這個詞非常適合，因為它描述了運動員多次嘗試但未能達成目標。The company made an abortive attempt to expand into the European market.（該公司曾試圖擴大到歐洲市場，但未能成功。）(B) buoyant - 樂觀的、輕快的。Despite the setback, she remained buoyant and optimistic about the future.（儘管遇到挫折，她仍然對未來充滿樂觀和希望。）(C) efficacious - 有效的、奏效的。The new medication proved to be highly efficacious in treating the disease.（新藥物被證明對治療該疾病非常有效。）(D) vulgar - 粗俗的、低俗的。She was appalled by the vulgar language used in the movie.（她對電影中使用的低俗語言感到震驚。） 因此，正確答案是 (A) abortive。