Following a year of fast development, by the first quarter of this year, China has had about 1,100 e-commerce websites.
A.China had about 1,100 e-commerce websites by the end of last March
B.by the end of the first quarter of this year, China has had about 1,100 e-commerce websites
C.by the end of this recent past March, China has about 1,100 e-commerce websites
D.by the end of this first quarter, China had about 1,100 or so. e-commerce websites
参考答案:A
解析: 时态应用。 根据句意,时态应该是一般过去时,排除掉B和C。而且第一季度已经过去了,D中的this表示将要到来的,也应排除。