【正确答案】
B
【答案解析】[听力原文] M: Hello, Dale. W: Hi, Andy. Is there anything interesting in the newspaper? M: Yes. New research has shown that not getting enough sleep can have a negative effect on our ability to learn. W: Is it to say that the more sleep I get, the cleverer I will be? M: Not exactly. The researchers just remind us to get enough sleep. And they have found the lack of sleep is a significant factor in lowering the achievement of school pupils. W: Does that mean the findings could be relevant to any of us who are trying to learn something'? M: Yes. And the most interesting fact is that lack of sleep is more of a problem in affluent countries such as the United States, England, France and Saudi Arabia. W: Unbelievable! Why? M: Well, students in such countries are more affected by influences from their home life. W: You're talking about computers and TVs in their bedrooms and using smartphones? M: Yes, they're tempted by these high-tech products instead of just getting their heads down and having a good night's sleep. The survey found 80% of 13- and 14- year-olds in the US were identified by their teachers as being affected by lack of sleep. The international average was 57%. W: It's terrible! I think classes have to be engaging, interesting and exciting to stop students getting sleepy and lacking in energy. M: Yes, I think so. This research looked at the link between the amount students sleep and their test results. W: I guess children with more sleep achieve higher test results in maths, science and reading. M: You are right. That's exactly what they have found. So the researchers believe the lack of sleep causes brain to run on empty. It struggles to absorb and retain ideas. W: Are there other problems with students staying up late before they go to bed? M: Yes. At the Children's National Medical Centre, doctors are seeing more and more sleep-deprived kids, and it's not just affecting their school work. It's linked to obesity, mood swings and behaviour problems. In fact, it's putting their long-term health at risk. W: That's too bad. Is there a solution to all of this? M: Well, the school days in some countries start later. And students have a break in the afternoon. But the real solution is that students can go to bed earlier. W: I see. According to the new research, what's the relation between sleep and the ability to learn? [考点] 本题出题点在重要细节处。 题目问：根据新的研究，睡眠与学习能力之间有何关联?对话中男士说：“New research has shown that not getting enough sleep can have a negative effect on our ability to learn. ”(新的研究表明，睡眠不足可能会给我们的学习能力带来负面影响。)所以本题选B。
【正确答案】
B
【答案解析】[听力原文] Which is NOT the problem a sleep-deprived student may suffer? [考点] 本题出题点在并列处(and)。 题目问：哪一项不是缺乏睡眠的学生可能会遭遇的问题?对话中男士说：“It's linked to obesity, mood swings and behaviour problems. ”(睡眠不足与肥胖、情绪波动和行为问题都有关系。)并没有提到睡眠不足与糖尿病之间有联系，所以本题选B。