单选题 Because of his______superb sales presentations, Mr. Lim is always selected to represent the home appliance company at trade fairs.

A、 approximately
B、 variably
C、 impartially
D、 consistently

【正确答案】 D

【答案解析】解析：根据上下文语义，此处表示“因为他一直以来的出色的销售表现”，因此副词(D)consistently(一贯地，一致地)为正确答案。(A)approximately意为“近似地，大概”，(B)variably意为“易变地，不定地”，(C)impartially意为“无私地，公平地”。