The type of activity police investigators engage in and material gathered , depending on whether investigations use the reactive or proactive method.
Avaries正確答案
Bvibrates
Cvaporizes
Dvanishes
答案與詳解
為什麼答案是 A
vary = 變化、因...而異。vary depending on 是固定搭配，表示「依...不同而有所差異」，完全符合題意：警察調查活動與蒐證材料會因採反應式或主動式方法而異。
考點：vary 因...而異考點：vibrate 震動考點：vaporize 蒸發考點：vanish 消失
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