单选题
The Personnel Department has lost no time seeking a ______ for Dr. Roberts, who recently retired after 30 years of service.
【正确答案】
B
【答案解析】“罗伯茨博士的接班人”的句意最恰当，故选(B)replacement sb.(后任；代替，替换)。replacement for表示“某人的接班人”，find/look for/ seek a replacement for...表示“寻找…的接班人”。