Hey girls, if the boys in your class are acting silly, you might as well leave them alone. You are far more sensible than them, aren’t you?

There is science to back up this theory. Scientists from Newcastle University, UK, and Seoul University, South Korea, found that the brain matures (成熟) earlier in girls than in boys. This is partly because of the way children’s brains are “pruned.”

As the brain matures, it begins to cut out unimportant information and focus on important information. This process is called “pruning.”

In order to learn more about this process, scientists scanned the brains of 121 people aged between 4 and 40. They found that pruning began much earlier in girls. Between the ages of 10 and 12, a girl’s brain will start to see a lot of activities as the pruning process starts. But for boys, this doesn’t start until the age of 15 to 20.

During this process, the brain will turn off memories, sounds or sights that appear several times. But important connections, like linking the sound of a familiar person’s voice to their face, are kept.

“The loss of connectivity during brain development can help to improve brain function,” scientist Sol Lim told the Daily Telegraph.

To understand this more easily, imagine you are at a party and everyone is talking. You can’t concentrate. But if you “turn off” some of the voices, it is easier to hear the others. The brain works in a similar way.

1.What did the scientists find?

A. Boys usually focus on unimportant information.

B. Girls never focus on unimportant information.

C. Girls mature earlier than boys.

D. Connectivity helps improve brain function.

2.What does the underlined word “pruned”probably mean?

A. 删减 B. 成长 C. 改变 D. 损失

3.What happens during the process “pruning”?

A. The brain doesn’t work for a moment.

B. You can’t remember, hear or see.

C. The connections between things disappear.

D. Brains develop to focus on important information.

4.What can we know from the passage?

A. Boys are more silly than girls.

B. Boys are less sensible than girls.

C. You can never concentrate at the parties.

D. Brains function better after losing some connections.

One morning Fan Xing discovered that her classroom had changed.The 13-year-old saw that the desks were no longer in rows(排),but pushed together to make six bigger desks.

The new arrangement(排列) was part of a reform(改革) at Fan's school,Changsha Daotian Middle School in Hunan.About five weeks ago,more than 2,000 junior students at the school began studying in this way,with six to eight students sitting in groups.

"This reform is designed to provide students with easier ways to study and more chances for discussion,"said Liu Xu,a school head teacher."Our school hopes it can improve students' abilities(能力) for self-study as well as teamwork."

The new arrangement took some time for students to get used to."I was too curious(好奇) about it for the first two days,"said Fan.But soon she and her classmates got used to it."Now our class is quieter because we can stop loud students with some simple gestures(手势),"said Fan."What's more,we can express our own ideas and learn others' through discussion.It's a better way to study."

Feng Yu likes this new classroom arrangement very much and has made some progress studying.The 14-year-old said,"Group members first discuss,and then explain the solutions or answers to difficult questions in front of the whole class."

"The discussion gives us more confidence to make speeches,"said Feng."We can also improve our friendships."

The reform has asked for more from teachers.They have no more than 15 minutes to teach in class."It is a big challenge to teach in such short time the lessons which should be taught in 45 minutes,"English teacher Wang Jing said."We have to improve methods to teach better.We must prepare some interesting topics and exercises before class so that students can discuss them."

Wang said that some students always talk.The teachers have to move continuously in the classroom to keep them quiet and get them to concentrate on class."It demands more,but I believe it will pay off,"Wang added.

1.From the first paragraph of the passage,we know ______ .

A. Fan Xing was a 13-year-old student

B. Fan Xing's classroom was changed in rows

C. Fan Xing's desk was no longer in her classroom

D. six big desks were moved into Fan Xing's classroom

2.The purpose of the new classroom arrangement is to ______ .

A. make the students feel fresh and interested

B. divide big classes into small classes

C. make more room for new students

D. provide students with more chances for teamwork

3.How did the new classroom arrangement help the students' study according to the passage? ______

A. By stopping loud students using simple gestures.

B. By giving students more chances to work in groups.

C. By making students explain difficult questions after school.

D. By giving students more confidence to improve friendship.

4.What is the big challenge for the teachers in classroom teaching in the reform? ______

A. The teachers have to improve their studying methods.

B. The teachers must prepare more interesting topics for exercises.

C. The teachers are only given 15 minutes to teach in one period(节) of the class.

D. The teachers have to move about in the classroom to keep the students quiet.

5.Which of the following is NOT true according to the passage? ______

A. The students in Changsha Daotian Middle School are sitting in groups when having classes.

B. The reform in the school is aimed at improving the students' abilities for self-study.

C. Studying in groups gives the students more confidence to concentrate on class.

D. The new classroom arrangement also brings some new challenges to the teachers.

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