Firefighting is a highly technical profession which requires years of training and education to become in.
Afraudulent
Bconfidential
Cproficient正確答案
Dvulnerable
答案與詳解
為什麼答案是 C
proficient 意為「熟練的、精通的」，常見搭配是 proficient in something，表示在某領域或技能上熟練。題句中的 years of training and education 正好對應達到熟練程度，故正確。
載入中…
