纵观近年各地中考题,“用数学的意识”及开放性的问题受到普遍关注.涉及应用数学知识解决联系实际问题的“应用题”数量增多,现以有理数为例,举例如下.例1M国股民吉姆上星期六买进某公司股票1000股,每股27元,下表为本周内每日该股票的涨跌情况(单位:元)(1)星期三收盘时,每股是多少元?(2)本周内每股最高价多少元?最低价多 Looking at the examination questions in various parts of the country in recent years, the “consciousness of mathematics” and open issues have received widespread attention. The number of “application questions” involving the application of mathematical knowledge to solve practical problems has increased, but rational numbers are taken as examples. Examples are as follows: Example 1M State Investor Jim bought 1,000 shares of a company stock last Saturday at 27 yuan per share. The following table shows the daily rise and fall of this stock during the week (unit: yuan) (1) At the close of Wednesday, each stock was How much?(2) How much is the highest price per share in this week?