单选题 —This is English Department of Beijing University.
—Hi, I'm a student in English Department. I need to know the foreign professor—Mr. Smith's email address.
— ______ . I'm sorry, Mr. Smith does not have an email address in our system.

【正确答案】 A
【答案解析】[考点] 打电话用语
[解析] 因为接线员不知道Mr. smith的e-mail，要在系统内查找，所以A项“请稍等”正确。