根据短文内容回答问题。

　　A new semester begins．Is anything new at your school?

　　This year, Sichuan schools have a new rule：the first classes begin no earlier than 8∶30 a. m．This will make students get an extra hour to sleep in the morning, and help them feel less tired．

Students’opinions

　　Liu Xian, 15, said his class were excited by the news on the first day of school．“It's so good that we can get up later!”said Liu．

　　Liu studies in Chengdu No．4 Middle School．He used to get up at 6∶40 a. m．Now he can get up at 7∶40 because class doesn't start until 8∶40 a. m．

　　Wu Hongli, 15, said the new schedule is good for her health．“I used to drink coffee every night, or I would feel too sleepy to finish my homework,”said Wu．“Now I can finish without coffee．”

　　She used to get up at 6∶30 a. m. Now she can get up at 7∶30 a. m．

Parents’and teachers’thoughts

　　Wu's mother was happy too．She thought more sleep would help her daughter grow taller．

　　But some parents worried that more would mean less learning．There used to be five classes in the morning．Now there are only four．

　　Many teachers, however, said the changes would help students learn better．

　　“Students used to be sleepy for the first two classes in the morning,”said Wu Zongping an English teacher．“But now they look energetic and they learn much better than before．”

1．What is the new rule in Sichun schools this year?

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2．How did the students feel when they heard the news?

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3．Why did some parents worry about the new change?

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4．Did the teachers feel good about the new rule?

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5．What is the main purpose to make the new rule?

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