When rescuing injured workers at construction sites where the stairs are not accessible, a moving ladder is a good _____ to consider.
Awarranty
Bepisode
Ctransaction
Dalternative正確答案
答案與詳解
為什麼答案是 D
alternative 指「替代方案、另一選擇」。樓梯無法使用時，移動梯正是替代方案，語意完全契合。
載入中…
