周日的早晨,豆豆起床后发现床头的小闹钟指针不转了。这是怎么回事呢?豆豆想了想,原来是昨天晚上忘记给小闹钟上发条了。豆豆估计了一下,把小闹钟调到了8点钟,然后离家步行到图书馆去看书。来到图书馆,豆豆特意看了一下图书馆门厅里的电子钟,只见电子钟显示的准确时间是9时30分。于是豆豆在图书馆门口买了早餐,吃完后又在阅览室看了一会儿书。临走的时候, Sunday morning, peas found bedside alarm clock pointer does not turn up. This is how the case? Peas thought for a moment, it turned out last night forgot to clock a small alarm clock. Peas estimated a moment, the alarm clock transferred to 8 o'clock, and then walked to the library to go home to read a book. Came to the library, Peas deliberately looked at the electronic clock in the lobby of the library, I saw the exact time electronic clock display is 9:30. So Peas bought a breakfast in front of the library, after eating read in the reading room for a while book. Before leaving,