经济学人精读03/California’s schools/学生睡眠不足问题何解

Snooze on

Related words

1. sleep cycle = sleep habits change 睡眠周期

Vocabulary

1. push back 推迟
2. puberty 青春期
3. Sceptics 怀疑论者
4. logistical 组织上的
5. dusk 傍晚
6. imperative 至关紧要的，紧迫的

Nice sentence

1. （郊区化）Since the 1950s, Americans have been moving away from cities to sprawling suburbs with limited public transport. Families became car-dependent and buses were used to get pupils to school.
2. (睡眠不足的危害）Poor sleep is associated with serval issues, both physical-health, like obesity, and negative feelings, such as anxiety and depression. Sleep deprivation also seems to increase risky behaviours among teens, including use of alchol, tobacco and other drugs.
3. （具体问题具体分析）Start times should be decided at the local leverl.