单选题 Asaha Telecommunications does not require staff to participate in its community outreach programs, but many employees ______do so.

【正确答案】 A

【答案解析】解析：根据上下文语义，此处意为“许多职员自发地参与社区外联服务活动”，因此副词(A)voluntarily(自发地)为正确答案。(B)memorably意为“难忘地”，(C)divisively意为“分裂地，引起不和地”，(D)infrequently意为“稀少地”。