问题
选择题
____ new round of competition for customers has started with discounted products in Gome and Suning, setting off____ wave of shopping rush at the end of the year．
A．A;不填
B．The; a
C．A; the
D．A; a
答案
答案：D
根据题意，新一轮的竞争，这里是泛指任何一次竞争。一波购物高峰，这里也是泛指，故用都用不定冠词，选D。