题目

阅读下面短文，掌握其大意，然后从36-55各题所给的四个选项(A、B、C和D)中，选出最佳选项。 In the seventh grade when my mother suggested that I should join the golf team,  I thought she had lost her mind. But as  36 , my mother won in the end. I  37  on the junior school golf team in the seventh and eighth grade. The summer before  38  school came, I had a burning  39  to play on the high school team.     That summer I  40  almost every Sunday morning on the golf course (高尔夫球场) with my  41 , and too many afternoons counting on the course如果使用撬棒的动力臂是100cm，阻力臂是30cm，当用60N的动力时，能撬动重    N的物体．