自1978年经济改革以来，中国经济以年均近10%的速度增长，使其国民生产总值几乎翻了两番。

A、Since economic reform began in 1978, an average growth rate of almost 10% a year has seen

B、Since economic reform began in 1978, an average growth rate of almost 10% a year has seen

C、Since economic reform in 1978, China’s economy grows at a rate of almost 10% a year and ma

D、Since economic reform in 1978, China’s average growth rate is almost 10% a year and has wi