Prof Russell Foster,an expert at the University of Oxford,said,“This is an important study as it provides practical evidence that the use of electronic devices before bed does indeed reduce sleep duration.”He said teenagers should be warned of this.
【文章大意】 本文是一篇说明文。一项研究发现,青少年花在电子设备上的时间越长,睡眠时间就越短,睡眠质量也越差。因为足够的睡眠对于身心健康都有好处,所以青少年们在睡前应远离电子设备。
5.What is stressed in the first two paragraphs?
A.Teens now tend to have more problems with studies.
B.Teens get harder to fall asleep with more screen time.
C.Teens addicted to screen are likely to be more energetic.
D.Teens’ sleep duration has nothing to do with their screen time.
解析:选B。推理判断题。通读第一、二段可知,这两段在强调使用电子设备对青少年睡眠的影响。故选B项。其余选项和这两段内容无关。
6.By asking questions,the study finds________.
A.boys are more likely to chat online than girls
B.girls are more frequent on the screen than boys
C.teens are attracted by different electronic devices
D.teens use the screen for the same purpose
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