依据霍夫斯察德的框架，确定性规避指的是过度自信、追求金钱和物质财富以及竞争优势的程度。（）
参考答案：错
A．Aging population is expected to double within decades.
B．By 2020, 45% of the people in the country will be over sixty-five.
C．Old people in this country can expect to live a longer life.
D． In less than 20 years, 23 million more people will have to retire.
关井压力稳定后从套管压力表上读到的套管压力值，是（）之差。
A、地层压力与井底压力之差
B、地层压力与管柱内静液压力
C、地层压力与环空静液压力
