阅读理解。 Life is difficult. This is a great truth, one of the greatest truths. It is a great truth because once we truly see this truth, we transcend (超越) it. Once we truly know that life is difficult-once we truly understand and accept it-then life is no longer difficult. Because once it is accepted, the fact that life is difficult no longer matters. Most do not fully see this truth. Instead they complain about their problems and difficulties as if life should be easy. It seems to them that difficulties represent a special kind of suffering especially forced upon them or else upon their families, their class, or even their nation. What makes life difficult is that the process of facing and solving problems is a painful one.  Problems, depending on their nature, cause us sadness, or loneliness or regret or anger or fear. These are uncomfortable feelings, often as painful as any kind of physical pain. And since life causes an endless series of problems, life is always difficult and is full of pain as well as joy. Yet, it is in this whole process of solving problems that life has its meaning. Problems are the serious test that tells us success from failure. When we desire to encourage the growth of human spirit, we encourage the human ability to solve problems, just as in school we set problems for our children to solve. It is through the pain of meeting and working out problems that we learn. As Benjamin Franklin said, those things that hurt, instruct. It is for this reason that wise people learn not to fear but to welcome the pain of problems. 1. The writer probably used just one short sentence in the first paragraph to  ______. A. save space B. persuade readers C. make readers laugh D. get readers' attention 2. According to the passage, we give school children difficult problems to solve in  order to______. A. encourage them to learn B. teach them to fear the pain of solving the problem C. help them learn to deal with pain D. teach them how to respect for problems 3. From the passage, it can be inferred that ______. A. everybody has problems B. we become stronger by meeting and solving the problems of life C. life is difficult because our problems bring us pain D. people like to complain about their problems