--Do you know when the Chinese custom_________ from?
--It's hard to say. But its characteristics__________ the Tang Period.
A. began ; prove B. started ; show
C. is ; appear D. dates ; suggest
--Do you know when the Chinese custom_________ from?
--It's hard to say. But its characteristics__________ the Tang Period.
A. began ; prove B. started ; show
C. is ; appear D. dates ; suggest
D
本题关键是抓住答句中所提供的信息，“It's hard to say'’，这表明回答者并不很肯定。而prove证明，show表明，排除A，B。前一空date from意为“追溯至……”