—Which is _________ season to visit Yuyuantan Park?

—Spring. It's fantastic.

A.good B.better C.best D.the best

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How beautiful the place is! I really want to stay here for ________ days.

A.two another B.other two C.another two D.two other

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________ apples do we need to make salad?

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The Teenage Brain

Parents, teachers, and others who deal closely with teenagers know how difficult the adolescent(青少年的) years can be. This was thought to be due to the “foolishness of youth.” Now, brain-imaging technology allows scientists to study the physical development of the brain in more details than ever before. Their discoveries have led a new theory of why teens act this way.

Recently, scientists have discovered that though our brains are almost at their full size by the age of six, they are far from fully developed. Only during adolescence do our brains truly “grow up.” During this time, they go through great changes, like a computer system being upgraded. This “upgrade” was once thought to be finished by about age 12. Now scientists have found that our brains continue to change until age 25. Such changes make us better at balancing impulses (沖動(dòng)) with following rules. But a still-developing brain does this clumsily (笨拙地). The result, scientists believe, is the unpredictable behavior seen in teenagers.

The studies show that teens are more likely to take risks. Luckily, the news isn’t all bad. As brain scientist B. J. Casey points out, the teen brain inspires such behavior in order to help teens prepare for adult life.

One way the brain does this is by changing the way teens measure risk and reward (回報(bào)).

Researchers have found that when teens think about rewards, their brains release more of the chemicals that create pleasure. Researchers believe this makes the rewards seem more important than the risks, and makes teens feel the excitement of new experience.

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Unluckily, this need for greater rewards can sometimes lead teens to make bad decisions. However, it also means that teens are more likely, and less afraid, to try new things or to be independent. And in the long run, the impulses of the teen brain are what help teens leave their parents’ care and live their own life successfully.

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B.Our brains finish upgrading by age of twelve.

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B.The impulse of teen brain can benefit teenagers.

C.Teenagers with more friends are more successful.

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書面表達(dá)

假如你是劉云, 現(xiàn)在的你和兩年前相比, 有很大變化。對于將來, 你有很多憧憬, 請根據(jù)下表寫一篇短文。

Two years ago

Now

In thirteen years

身份

a primary school student

a Grade 8 student

a doctor

外貌

矮，短發(fā)

高了些，頭發(fā)和以前一樣短

高得多

個(gè)性

害羞，朋友少

更外向，朋友更多

自信confident，友好

愛好

彈鋼琴

每周打兩次乒乓球

\

理想

鋼琴家

長大后當(dāng)醫(yī)生

\

______________________________________________________________________________________________________________________________________________________________________________________________________

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