9 - 外刊实战：科普类

9-1 《Is your Sleep Cycle Out of Sync It May Be Genetic》之标题

9-2 《Is your Sleep Cycle Out of Sync It May Be Genetic》之第一段

9-3 《Is your Sleep Cycle Out of Sync It May Be Genetic》之第二段

9-4 《Is your Sleep Cycle Out of Sync It May Be Genetic》之第三段

9-5 《Is your Sleep Cycle Out of Sync It May Be Genetic》之第四段

9-6 《Is your Sleep Cycle Out of Sync It May Be Genetic》之全文总结