Getting less sleep has become a bad habit for most American kids. According to a new survey(調(diào)查) by the National Sleep Foundation, 51% of kids aged 10 to 18 go to bed at 10 pm or later on school nights, even though they have to get up early. Last year the Foundation reported that nearly 60% of 7- to 12-year-olds said they felt tired during the day, and 15% said they had fallen asleep at school.

How much sleep you need depends a lot on your age. Babies need a lot of rest: most of them sleep about 18 hours a day! Adults need about eight hours. For most school-age children, ten hours is ideal(理想的). But the new National Sleep Foundation survey found that 35% of 10- to 12-year-olds get only seven or eight hours. And guess what almost half of the surveyed kids said they do before bedtime? Watch TV.

“More children are going to bed with TVs on, and there are more opportunities(機會) to stay awake, with more homework, the Internet and the phone,” says Dr. Mary Carskadon, a sleep researcher at Brown University Medical School. She says these activities at bedtime can manfen5 get kids all excited and make it hard for them to calm down and sleep. Other experts say part of the problem is chemical. Changing levels of body chemicals called hormones not only make teenagers’ bodies develop adult characteristics, but also make it hard for teenagers to fall asleep before 11 pm.

Because sleepiness is such a problem for teenagers, some school districts have decided to start high school classes later than they used to. Three years ago, schools in Edina, Minnesota, changed the start time from 7:25 am to 8:30 am. Students, parents and teachers are pleased with the results.

1.What is the new National Sleep Foundation survey on?

A. American kids’ sleeping habits. B. Teenagers’ sleep-related diseases.

C. Activities to prevent sleeplessness. D. Learning problems and lack of sleep.

2.How many hours of sleep do 11-year-olds need every day?

A. 7 hours. B. 8 hours. C. 10 hours. D. 18 hours.

3.Why do teenagers go to sleep late according to Carskadon?

A. They are affected by certain body chemicals.

B. They tend to do things that excite them.

C. They follow their parents’ examples.

D. They don’t need to go to school early.

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科目：高中英語 來源：內(nèi)蒙古包頭市2016-2017學(xué)年高二下學(xué)期期末考試英語試卷 題型：書面表達

假定你是中學(xué)生李華，打算用周日的時間，在校附近公園開展“英語角”活動，請根據(jù)以下要點給在你校留學(xué)的美國學(xué)生Linda寫一封邀請信：

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2.說明自己的計劃（活動目的、時間、地點、參加者等）

3.邀請她和她的朋友們參加。

注意：1.詞數(shù)100左右；開頭和結(jié)尾已經(jīng)寫好，不計入總字?jǐn)?shù)。

2.可以適當(dāng)增加細(xì)節(jié)，以使行文連貫。

Dear Linda,

How are you these days?____________________________________________________________________

____________________________________________________________________________________________

____________________________________________________________________________________________

____________________________________________________________________________________________

____________________________________________________________________________________________

____________________________________________________________________________________________

____________________________________________________________________

Yours

Li Hua

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科目：高中英語 來源：福建省寧德市2016-2017學(xué)年高二下學(xué)期期中聯(lián)合考試英語試卷 題型：閱讀理解

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