(A)salvage:救助;營救;搶救;挽救(+from);打撈。(B)investigate:調查;研究(+into)(C)reduce:減少;縮小;降低。(D)temper:鍛練;調如(+with);使變淡;使緩和(+with)延伸:tamper(v) 竄改(資料)
31 To reduce the risk that someone might..-阿摩線上測驗