本周市场先扬后抑，指数在周一强劲上涨攀越1700点之后连续四个交易日回落。全周交易的活跃程度较上周略有下降，单日总成交金额缩减至400亿元以下。沪深两市出现分化，上证综合指数跌20.65点至1658.54点，跌幅1.23％；深证成份指数涨19.83点至3842.03点，涨幅0.52％。形成这种 This week, the market was upbeat and the index retreated for four consecutive trading days after rising strongly above 1,700 on Monday. The activity level of the whole week dropped slightly from last week, and the total daily transaction volume was reduced to less than 40 billion yuan. Shanghai and Shenzhen diverged, with the Shanghai Composite falling 20.65 points or 1658.54 points, or 1.23%, while the Shenzhen Component Index gained 19.83 points or 3842.03 points, or 0.52%. Form this