题目

  31   mean your life is,meet it and live it ;do not shun it and call it        32   names.It is not so bad   33  you are.It looks poorest when you are richest.The fault-finder will  34   faults in paradise.Love your life,poor as it is.You may perhaps have some pleasant,thrilling,glorious hourss,even in a poor-house.The      35  sun is reflected   36   the windows of the alms-house as brightly as from the rich man's abode;the snow  37   before its door as early in the spring.I do not see but a   38   mind may live as contentedly there,and have as che在直角坐标系xoy 中，已知曲线C1：（t为参数）与曲线C2：（θ为参数，a＞0 ） 有一个公共点在X轴上，则a等于    ．