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Scientists found that writing a to-do list helps us sleep faster. To-do lists help us to relax. We don’t worry about things we have to do. We can forget about them. A researcher said, “We live in a 24/7 work culture. Our to-do lists seem to be growing all the time and making us worry about unfinished(未完成的) tasks at bedtime.”

The researchers looked at how students slept. Half of them made a to-do list before they slept. Those who wrote a to-do list fell asleep about 9 minutes faster. Writing detailed(详细的) lists makes you fall asleep faster than writing simple lists. About 40 percent of adults have difficulty falling asleep at least a few times each month.

1.What’s the use of to-do lists?

A They make us upset.

B They make us happy.

C They help us sleep faster.

D They help us sleep slower.

解析：选C。C 细节理解题。根据第一段第一句Scientists found that writing a to-do list helps us sleep faster.可知科学家们发现，写一份待办事项清单有助于我们更快地入睡，故选C。

2.We forget about __________ at bedtime.

A the daily plan

B the bad health

C unfinished tasks

D what we have to do

解析：选D。D 细节理解题。根据第一段第三四句We don’t worry about things we have to do. We can forget about them. 可知我们会暂时忘记我们必须做的事，故选D。

3.Who fell asleep faster?

A Students worrying about tasks.

B Students who wrote a to-do list.

C Adults having difficulty every month.

D People living in 24/7 work culture.

解析：选B。B 细节理解题。根据第二段第三句Those who wrote a to-do list fell asleep about 9 minutes faster. 可知那些写了一份待办事项清单的人要快9分钟入睡，故选B。

4.What helped people sleep even faster?

A Simple lists.

B Detailed lists.

C Shopping lists.

D Housework lists.

解析：选B。B 细节理解题。根据第二段倒数第二句Writing detailed lists makes you fall asleep faster than writing simple lists. 可知写详细的列表比写简单的列表的人入睡得更快，故选B。

5.What is the passage?

A A story.

B A poem.

C An ad.

D A scientific research.

解析：选D。D 文章体裁题。本文主要描述科学家们对睡眠问的研究发现，因此是一篇科研文章，并非故事、诗歌或广告，故选D。