题目内容
--Do you know when the Chinese custom_________ from?
--It's hard to say. But its characteristics__________ the Tang Period.
--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……”
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