选择题：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。

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