单选题 (623x377-120)/(375x625+376)的值为( )。
【正确答案】 D
【答案解析】原式=[(625-2)x(375+2)-120] /(375x625+376)=(625x375+2x625-2x375-4-120)/(375x625+376)=[625x375+2x(625-375)-124] /(375x625+376)=(625x375+2x250-124)/(375x625+376)=(375x625+376)/(375x625+376)=1