题目

若不等式的解集为，则实数的值为     （    ）        A．                 B．       C．36              D． 答案：C 解析:4是方程的解，代入得，，How do you spend your spare time? There will be different answers to it. Most people in Poland have their own ways of spending free time. Sometimes they just want to have a rest, but they try to do something more pleasant most of the time. They have many different hobbies, which help them to get away from their everyday problems and spend their free time happily.Many Polish people like traveling. They look for new places that they have never been to and add new and exciting experiences to their journey. Some of them like to climb mountains, others like to go to the sea or a lake to swim, because these can make them get exercise and are good for their health.Many Polish people also like to do sports in their free time. They are usually crazy about football, and football is regarded as the Polish national sport. Many football fans may support a certain team, so they go to watch every match of the team they support, and they buy many things that have any relation with the team. Watching sport and doing it are both good ways to relax.What's more, doctors say that doing sports is very good for the health. Many people in town, especially young men, often go to the gym to attend the exercise classes to keep fit.Besides these ways, Polish people have many other ways to spend their free time. And they really enjoy their free time.【1】Polish people have many different hobbies in order to .A. solve their daily problemsB. finish all their workC. relax themselves in their spare time【2】Why do some Polish people like climbing mountains?A. Because they hate traveling.B. Because they can get exercise from it.C. Because they can find a new place.【3】Which of the following sports is NOT mentioned in the passage?A. Playing sports.B. Climbing mountains.C. Skating.【4】What is the main idea of Paragraph 3?A. Football is many Polish people's favorite sport.B. Young Polish people often go to the gym.C. All the Polish people do sports in their spare time.