A new term has begun. Teachers are   1  about the fact that new students are not easy to deal with(对付). They like to bring telephones（手机） and MP3 players to school. What is   2  , some students even use telephones to do out-of-class matters in class, or sometimes just for fun. Some otherstudents listen to MP3 players when they are having a lesson that they are not interested in.
Are these new students really that  3 ? “Yes.” says Delaney Kirk, a professor at Drake University.   4  she says it’s not their fault(过错).   5 , the teachers should be blamed(责备). Mrs Kirk first began thinking about students’ manners six years ago. “I had my first class in which students were sleeping or talking to each other. It seemed that learning well had nothing to do with them.” she says. “At first, I got worried about this.” but then I said to myself, “You’re giving   6  , and you need to deal with this kind of situation (情况). These students need to know more about manners. It’s time to help them develop some good   7  . They shouldn’t waste time doing nothing when they are young. Sooner or later, they may regret(后悔) the time they have wasted.”
Mrs Kirk also   8  a list of suggestions(建议) to help teachers better manage (控制) their classes. The following are among her suggestions:
l     On the first day of class, tell students how they will benefit(受益) by taking the class and the importance   9  listening carefully in class.
l     Do not allow（允许） them to bring telephones or MP3 players to the class at all.
l     Tell them how to use telephones or MP3 players   10  .

A study finds that not enough morning light causes teenagers not to get enough sleep at night. “As teenagers spend more time indoors, they miss necessary morning light. Day light is needed to keep the balance of the body’s 24-hour biological system (生物系统), which regulates (调节) body temperature and sleep styles,” reports Dr. Mariana Figueiro. “These teenagers who receive little morning light are going to bed later, getting less sleep and doing badly in tests. They are more likely to fail in their exams.”
In the study, Dr. Figueiro asked 11 students in Grade 8 to wear special glasses to prevent blue morning light from reaching their eyes. At the end of the 5-day study she found that they fell asleep 30 minutes later than usual.
Throughout her research, Dr. Figueiro has been very worried about teenagers going to bed too late. The problem is that today’s schools require teenagers to be in school very early in the morning. These students are likely to miss the morning light because they often go to school before the sun is up or as it’s just rising.
Furthermore (此外), the schools are not likely to provide enough electric light to keep the balance of this biological system. Our biological system is much more sensitive (敏感的) to blue light. Therefore, having lots of light in the classroom does not make sure that there is enough light to keep our biological system balanced.
【小题1】Which of the following is the result of the study?