题干

数字货币是一个完全基于互联网技术的货币形态。支付、结算、储存等都可以在没有人工核准的情况下自动完成,并保存所有无法销毁的路径信息。目前我国央行对数字货币正进行深入研究,争取早日发行数字货币。数字货币的发行能(    )

①提升经济交易活动的便利性和透明度

②扩大货币职能,有效防止非法交易的发生

③方便央行对货币购买力的控制与调节

④促进支付体系的完善,提高支付结算效率

A:①④

B:②③

C:①③

D:②④

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A

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    Please sit down and enjoy your meal. Just don't talk about it.

    These are the requirements at a popular dining party that is known as "silent dinners". It encourages people who take part in the dining party not to speak for one to two hours and not to use electronic devices. Instead, the idea is to just on the food.

    "Silent dinner parties are fast growing," said Honi Ryan, who has hosted 32 silent dinner parties in 11 cities across eight countries, including Germany, Australia andthe United States. "The way we communicate is changing so fast that we need to stop and think about it."

    According to a 2013 nation wide survey, restaurant noise came in second only to poor service among customer(顾客) complaints. And 19 percent of diners who took part in the survey said noise and crowds disturbed them most while eating out.

    Though silent dinners may seem curious, the idea is not a new one. Yogis(瑜伽信徒) have long enjoyed silent meals as part of a deepened practice. In fact, it was a trip to a temple(寺庙) in India by a man that encouraged one Brooklyn restaurant recently to add a silent dinner to its event programming.

    "We'll make a small speech at the beginning of the meal to make sure everyone understands what is happening and ask them not to speak or use their mobile phones for at least an hour," said EAT Green point owner Jordan Colon. And background music will be turned off, too.

    "It's funny; when I first opened EAT, I didn't play music for some time and people had very different reactions(反映) to that," said Colon. "Some people who come out to eat are ready to party, but it was so quiet without music. But I wanted to create an environment that makes you relaxed."

    Although personal reactions to a silent dinner may be various, in general they are more likely to get into a lot of talk afterwards, said Ryan. "At the end of the night people always have a lot to say about silence. But the most reaction is that there is always a good laugh."