题目内容：

阅读短文，从短文后的选项中选出合适句子还原到短文中，使短文意思通顺，结构完整

It is often said that the best way to get to the bottom of a hard problem is to sleep on it. Does this make sense? A new study shows that it does.

A team of researchers at Northwestern University, US, found that sleeping is useful in both strengthening(增强) and reorganizing(重组)memory. 1.

The researchers did an experiment on 57 university students. They asked students to solve 42 difficult puzzles (谜题) on the first day.2. The researchers encouraged students to remember the music they heard while solving the puzzles. By the end, there were six puzzles that the students still hadn't solved.

3. They were given special sleep-monitoring(睡眠监测)and music devices(设备). The devices played music linked with the unsolved puzzles while the students were in the slow-wave(慢波) sleep stage (阶段). This stage is when people are likely to dream and reorganize their memories.

The next morning, the students tried the unsolved puzzles again.4. The music activated(激活） the memories they had of the puzzles while they were sleeping. It allowed them to "work” on the puzzles in their sleep.

Former studies of both people and animals have shown that sleep can not only strengthen memory, but also help us organize and send information.5. So the next time you face a difficult problem, sleep on it. Play some music to remind yourself of the problem.

A.Researchers found they were 55 percent more likely to solve them.

B.This can help you solve problems.

C.This study is more evidence(证据)of these findings.

D.The students then went back home to sleep.

E.Students worked on each puzzle while listening to different music.