$Bitcoin (BTC.CC)$ dropped to the lowest level it has been in seven weeks on Monday, going below $40,000 for the first time since the launch of eleven spot Exchange Traded Funds on January 11th.
$比特币 (BTC.CC)$ 周一跌至七周以来的最低水平，自1月11日推出11只现货交易所交易基金以来首次跌破40,000美元。
The cryptocurrency was last down 4.4% at $39,750, trading at its lowest since Dec. 4.
该加密货币最后一次下跌4.4％，至39,750美元，处于12月4日以来的最低水平。