单选题 The factory has produced ten thousand color TV sets this year, as ______ eight thousand last year.

【正确答案】 C
【答案解析】(as against与……对比)。句意为:该厂去年生产八千台彩电,今年生产一万台。A.as for至于;B.as to至于;D.as from从……时起。