判断题Most environmental problems are caused by people.()
判断题The more lovely a musical piece sounds, the more value it has.()
判断题The process of listening to music is scientifically divided on three separate planes.()
判断题In some countries of Asia or the Middle East, like Iran, students take an exit exam in their last year of high school. The people with the highest scores attend the best universities in the country.()
判断题heap is to put a lot of things on top of each other in an untidy way.()