一战失利，提共些数学机经

数学

1.给等边hexagon体积，让你算边长，hexagon是六边形。。。

2.二种东西A和B混成C，1.5ton的A和6ton的B配比，其中A和B的总COST一致，C的COST为$0.5 per 0.25 ton，问A的COST为per ton多少.

3.某公司降低COST，提高利润，原利润是SELLING RATE的20%，降低COST后利润是S/R的30%，原来COST是$120，问现在COST多少

不习惯草稿板，这3题要算的，印象比较深。

作文，

1.THE BEST TEACHERS ARE THOSE WHO EXPECT STUDENTS TO CHALLENGE POPULAR IDEAS RATHER THAN ACCEPTING.

2.Two years ago Nova High School began to use interactive computer instruction in three academic subjects. The school dropout rate declined immediately, and last year’s graduates have reported some impressive achievements in college. In future budgets the school board should use a greater portion of the available funds to buy more computers, and all schools in the district should adopt interactive computer instruction throughout the curriculum.

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达尔文进化论和苏联主流学说 （有点难度，没好好看JJ，哎）