NO.PZ2018101901000051
问题如下：
A fully formed head and shoulders pattern is most likely an indicator to:
选项：
A.buy.
sell.
hold.
解释：
B is correct.
A head and shoulders formation is a sell indicator that signals a reversal of a preceding uptrend. Once the head and shoulders pattern forms, the expectation is that the price will decline through the neckline price, setting the stage for a downtrend phase.
head shoulder 不是也有先涨再跌 和先跌再涨的两种图形吗？为什么这个题就直接说是要卖呢
