【題目】For many adolescents, “screen time” is almost a full-time job that could lead to obesity, diabetes and other health issues, a Canadian researcher says.

Adolescents now spend an average of six hours a day in front of some type of screen, whether it’s a television or computer screen or one of the many portable devices now popular with young people, studies done by Dr. Ian Michael Janssen show. “They spend more hours daily in front of a screen than they do in a classroom in a given year,” said Janssen, a researcher at Queen’s University in Kingston, Canada. The result is a rise in obesity rates among adolescents. Unfortunately, fixing the problem isn’t as easy as simply cutting down screen time, Janssen cautions. “Decreasing screen time will not automatically increase physical activity levels,” said Janssen, Some active kids also spend a lot of time in front of television and computer screens, and some kids who have low screen times also have low levels of physical activity, he points out.

As well, screen time is not necessarily bad, Janssen said. “The tricky part is that children today need to be using computers,” he said. Computers are required for schoolwork, and technological skills are important for future job prospects. The quality of screen time matters too, along with the quantity---consider the negative health messages found in food advertising during children’s shows, he said. Ideally, children should aim for no more than two hours of recreational screen time a day.

Janssen’s real worry about the rise in childhood obesity rates is not that there are now rare cases of type 2 diabetes in kids, where once there were none, hut the health problems these children are likely to face in the future as adults, including high blood pressure, high cholesterol and cardiovascular disease.

【1】Which one doesn’t belong to “screen time” according to the passage?

A. Watching TV. B. Surfing the Internet.

C. Seeing a film on an MP4. D. Making a telephone call.

【2】In Janssen’s opinion, kids had better to keep healthy.

A. lose weight. B. decrease screen time

C. take physical activities D. go on a diet

【3】What’s the researcher’s attitude towards “screen time of adolescents" ?

A. Concerned. B. Passive.

C. Positive. D. Frightened.

【4】We can learn from the passage that .

A. many of the people having full-time jobs suffer from obesity and diabetes.[

B. decreasing screen time can’t really solve the problem

C. children today most use computers to finish their school work

D. a new type of obesity in kids becomes Janssen’s real worry

【答案】

【1】D

【2】C

【3】A

【4】B

【解析】加拿大研究人員稱許多青少年的“屏幕時間”幾乎是一個全職的工作時間，可能會導(dǎo)致肥胖、糖尿病和其他健康疾病。青少年們的健康令人堪憂應(yīng)該多進(jìn)行體育鍛煉。

【1】考查細(xì)節(jié)理解。根據(jù)第二段Adolescents now spend an average of six hours a day in front of some type of screen, whether it’s a television or computer screen or one of the many portable devices now popular with young people，可以得知青少年在電視、電腦或者許多可攜帶設(shè)備屏幕前每天呆6個小時之久。可以得知打電話不屬于“屏幕時間”。故選D。

【2】考查細(xì)節(jié)理解。根據(jù)第二段“Decreasing screen time will not automatically increase physical activity levels,” said Janssen, Some active kids also spend a lot of time in front of television and computer screens, and some kids who have low screen times also have low levels of physical activity, he points out，可以得知Janssen建議孩子們少對著電子屏幕，多進(jìn)行體育鍛煉來保持健康。故選C。

【3】考查推理判斷。根據(jù)最后一段Janssen’s real worry about the rise in childhood obesity rates is not that there are now rare cases of type 2 diabetes in kids，可以得知研究人員們對孩子們長時間坐在電子屏幕前這一現(xiàn)象表示擔(dān)憂。故選A。

【4】考查推理判斷。根據(jù)第二段Unfortunately, fixing the problem isn’t as easy as simply cutting down screen time, Janssen cautions. “Decreasing screen time will not automatically increase physical activity levels,” said Janssen,，可以得知僅僅減少屏幕時間并不能解決這個問題。故選B。

練習(xí)冊系列答案
相關(guān)習(xí)題

科目：高中英語 來源： 題型：

【題目】Most people say that they do not usually feel confident. But exciting things can happen when we actually believe in ourselves. Here is a man who believed in his own ability even as a boy, and that confidence helped shape his adult life.

At the turn of the last century, a young boy quit school to help with the family expenses. When he was fifteen, he became interested in automobiles(汽車) and worked in a garage. He subscribed to a correspondence course on automobiles and, after a long day in the garage, studied at the kitchen table in the lamplight.

When he felt ready, he walked into the Frayer-Miller Automobile Company of Columbus, Ohio. When Mr. Frayer noticed him, he asked, “Well, what do you want?”

“I just thought I’d tell you I’m coming to work here tomorrow morning,” the boy replied.

“Oh! Who hired you?”

“Nobody yet, but I’ll be on the job in the morning. If I’m not worth anything, you can fire me.”

Early the next morning the boy returned to the plant. Noticing the floor was thick with metal shavings and accumulated dirt, the boy got a broom and set out to clean the place.

Because of his self-confidence and work ethic, the boy’s future was predictable. He went on to stand out in many fields, including automobile racing, piloting World War I planes and founding one of America’s largest airline companies ---- Eastern Airlines.

People who become more confident habitually encourage themselves. Without confidence, we are not likely to move far in the direction of our dreams. It is important that we always believe in ourselves. In order to reach victory, we must believe in ourselves even when we make mistakes

【1】How did the boy learn knowledge concerning automobiles?

A. He attended school in the daytime.

B. He studied hard at home.

C. He read books in the garage where he worked.

D. He turned to some instructors for help.

【2】We can learn from the boy’s words that _____.

A. he wanted to show off his competence

B. he looked down upon others

C. he was very generous

D. he believed in himself

【3】Due to his efforts and confidence, the boy _____.

A. made World War I planes

B. learned much knowledge in a garage

C. achieved everything in his life

D. set up Eastern Airlines

【4】What is the purpose of the passage?

A. To inspire us with self-confidence.

B. To tell us an interesting story.

C. To inspire us to work hard.

D. To stress the importance of realizing our dreams.

查看答案和解析>>

科目：高中英語 來源： 題型：

【題目】閱讀理解
EUROPE is home to a variety of cultural treasures. Lonely Planet, the world's largest travel guide publisher, has offered pairs of cities for culture-hungry but time poor travelers.
London and Paris
It takes you about two hours to travel from London to Paris by Eurostar, a high-speed railway service. The two capital cities have been competing in fashion, art and nightlife for decades — but each secretly looks up to the other.
No one can doubt the grand and impressive beauty of Paris' Louvre Museum, but if you want to save money, you cannot skip the British Museum free to visit. Compared with London, Paris has more outdoor attractions, such as the beautiful green walkway La Promenade Plantee.
In Paris, you'll see diners linger(逗留) over red wine. While in London, you can try some afternoon tea, eat fish and chips or salted cake.
Vienna and Bratislava
Austrian capital Vienna and Slovakia city Bratislava are an hour apart by train. But since they are linked by the Danube River, the best way to travel is by ship. A tour of the two cities is the perfect way to experience everything from 17th century's Habsburg dynast splendor to sci-fi restaurants.
Vienna is famous for Mozart and imperial palaces. You can appreciate the perfect blending(融合) of architecture and nature in the grand Scholoss Schonbrunn Palace, and reward yourself with a cup of Vienna coffee, which has made its way to the world's cultural heritage.
Bratislava is best known for its fine dining—the remarkable UFO restaurant. You can enjoy a meat-filled dinner here in an amazing setting.
（1）What's the relationship between London and Paris according to the text?
A.They help each other.
B.They attack each other.
C.They admire each other.
D.They don't like each other.
（2）What are the advantages of Paris mentioned in the article?
a. Louvre Museum b. Free access to museums
c. More outdoor attractions d. Better wines and perfumes
A.ac
B.cd
C.acd
D.bcd
（3）Lonely Planet recommends these two pairs of cities because _________.
A.they are not expensive to visit
B.they are best known to the world
C.they are always enemies between each other
D.they are close but different in many aspects

查看答案和解析>>

科目：高中英語 來源： 題型：

【題目】假如你是李華。上周六你班在老人福利院開展了送溫暖活動。請根據(jù)以下要點，寫一篇短文給學(xué)校英文雜志投稿，介紹活動情況。

時間、地點；

活動內(nèi)容;

你的感受。

注意：1、詞數(shù)100左右；

2、可適當(dāng)增加細(xì)節(jié)，使文章層次分明，行文連貫；

3、文中不得透露個人真實姓名及學(xué)校名稱。

參考詞匯：老人福利院 nursing home

A meaningful Social Activity

____________________________________________________________________________________________

____________________________________________________________________________________________

____________________________________________________________________________________________

____________________________________________________________________________________________

____________________________________________________________________________________________

____________________________________________________________________________________________

____________________________________________________________________________________________

__________________________________________________________________

查看答案和解析>>

科目：高中英語 來源： 題型：

【題目】A 2 billion year old Martian (火星的)rock appeals to have at our time been full of water from the surface of the Red Planet.

“Here we have a piece of Mars that I can hold in my hands. That’s really exciting,” Carl Agee, director of the Institute of Meteoritics at the University of New Mexico, told the Associated Press.

Agee led a team of scientists who published their report on the newly discovered meteorite （隕石），nicknamed Black Beauty. The rock is estimated to have contained 6,000 parts per million water and scientists believe it likely interacted with water at a time when most of the planet’s surface was believed to have been arid.

The baseball-size rock was discovered in the Sahara, and scientists say it contains more evidence of water than any of the other known Martian rock samples.

“It’s fairly fresh. It hasn’t been subjected to a whole lot of weathering (風(fēng)化作用），” University of Alberta meteorite expert Chris Herd told the AP.

Billions of years ago an eruption on the surface of Mars, likely caused by a volcano or planet collision, sent the rock into space, where it eventually made the journey to Earth, Agee and his team said the sample is “strikingly similar to the volcanic rocks examined by the NASA rovers Spirit and Opportunity on the Martian surface.”

Over the years, scientists have collected more than 60 Martian rock samples, with most being discovered in the Sahara and Antarctica. The new sample is much older than most of the other specimens, which are about 600 million years old or younger. The oldest known sample is an estimated 4.5 billion years old.

【1】The underlined word “it”in Paragraph 3 refers to “________”.

A. Mara B. the Red Planet

C. Black Beauty D. the report

【2】Where was the meteorite found?

A. In the Sahara. B. In Antarctica.

C. In Mars. D. In America.

【3】Which of the following is NOT true according to the passage?

A. Black Beauty has the size of a baseball.

B. Blank Beauty contains the most evidence of water among the known Martian rock samples.

C. An eruption on the surface of Mars sent the rock into Earth directly.

D. Black Beauty is not the oldest known sample.

【4】Where can we most probably read this text?

A. In a personal diary. B. In a science report.

C. In a travel magazine. D. In a geography textbook.

查看答案和解析>>

科目：高中英語 來源： 題型：

【題目】根據(jù)短文理解，選擇正確答案。
Most people say “yes” much more readily than “no”.
A friend is moving house this weekend and would like some help, and you agree. But, what you really wanted was a couple of quiet days relaxing at home. Or a roommate spends the entire weekends playing video games and wants to borrow your homework for “reference”. But, you've just finished it after taking a whole day to work hard.
Many people say “yes” to those kinds of requests. They tend not to consider their own interests and feelings, and are often angry with themselves afterwards.
Saying “no” requires courage and considerable practice, in fact, according to psychologists.
“Everyone wants to be liked,” says Gabriel Steinki, a German psychologist. “Saying ‘no' risk losing the affection of the person asking the favor or even a job.”
The result is that many people say “yes” just for keeping the peace. But experts say this is regrettable. Anyone should have the right to say “no”.
In fact, rejecting a request can even help to strengthen a relationship because it expresses a true feeling.
But, for people used to agreeing to every request, changing can be a long and uncomfortable learning process.
Most people believe that “If I say ‘no', I'll lose the affection of the person. But the affection is important to me.” This way of thinking can be replaced by this “If he only likes me because I always do what suits him, then the price of his affection is too high in the long term.”
Steinki says the key is talking to the other person to find a mutual(相互的) solution. “One needs to present the situation from one's own point of view, and to suggest how the situation can be dealt with to the advantage of both parties. The other person must have the feeling that his interests are being considered.”
When the refusal is not accepted, Steinki advises giving the reasons calmly again until the person gets the message.
（1）Most people say “yes” much more readily than “no” because ____________.
A.they don't care about their own interests and feelings
B.they don't know they will regret afterwards
C.they have already been used to saying “yes”
D.they care more about others' affection
（2）According to the writer, what should you do if you want to refuse the other person's request?
A.Just say you can't help him.
B.Say sorry to him.
C.Refuse him clearly.
D.Talk to the other person to find a mutual way.
（3）According to the writer, what should you do if your refusal is not accepted?
A.Say yes to him.
B.Repeat your reason for his acceptance.
C.Just go away.
D.Say no to him.
（4）What is the best title of the passage?
A.You Need Courage to Say “No”
B.“Yes” More than “No”
C.Nobody Has the Right to Say “No”
D.It's Easy to Say “Yes”

查看答案和解析>>

科目：高中英語 來源： 題型：

【題目】

假定你是李華，計劃組織一次郊游，請給你的英國朋友Chris寫封郵件邀請他參加。內(nèi)容包括：

1.參加者；

2.時間、地點；

3.活動：登山、野餐等。

注意：

1.詞數(shù)80左右；

2.可以適當(dāng)增加細(xì)節(jié)，以使行文連貫。

第二節(jié) 讀后續(xù)寫（滿分25分）

閱讀下面短文，根據(jù)所給情節(jié)進(jìn)行續(xù)寫，使之構(gòu)成一個完整的故事。

On a bright, warm July afternoon, Mac Hollan, a primary school teacher, was cycling from his home to Alaska with his friends. One of his friends had stopped to make a bicycle repair, but they had encouraged Mac to carry on, and they would catch up with him soon. As Mac pedaled ( 騎行)

along alone, he thought fondly of his wife and two young daughters at home. He hoped to show them this beautiful place someday.

Then Mac heard quick and loud breathing behind him. “Man, that's a big dog!" he thought. But when he looked to the side, he saw instantly that it wasn’t a dog at all,but a wolf:, quickly catching up with him.

Mac’s heart jumped. He found out his can of hear spray. With one hand on the bars, he fired the spray at the wolf. A bright red cloud enveloped the animal, and to Mac's relief, it fell back, shaking its head. But a minute later, it was by his side again. Then it attacked the back of Mac's

bike, tearing open his tent hag. He fired at the wolf a second time, and again, it fell back only to quickly restart the chase（追趕）。

Mac was pedaling hard now. He waved and yelled at passing cars but was careful not to show down. He was a steep uphill climb before him. He knew that once he hit the hill, he’d be easy caught up and the wolf’s teeth would be tearinginto his flesh.

At this moment, Paul and Beeky were driving their car on their way to Alaska. They didn’t think much of it when they saw two cyclists repairing their bike on the side of the road. A bit later, they spotted what they, too, assumed was a dog running alongside a man on a bike. As they got closer, they realized that the dog was a wolf. Mac heard a large vehicle behind him. He pulled in front of it as the wolf was catching up fast, just a dozen yards away now.

注意：

1. 所續(xù)寫短文的詞數(shù)應(yīng)為150左右；

2. 應(yīng)使用5個以上短文中標(biāo)有下劃線的關(guān)鍵詞語；

3. 續(xù)寫部分分為兩段，每段開頭語已為你寫好；

4. 續(xù)寫完成后，請用下劃線標(biāo)出你所使用的關(guān)鍵詞語。

查看答案和解析>>

科目：高中英語 來源： 題型：

【題目】閱讀下面短文，從短文后各題所給的四個選項（A、B、C、D）中，選出可以填入空白處的最佳選項。
Chris's parents were proud of him when he graduated from college. But it's been six months and he hasn't gotten a(n) 1 yet. In fact, he hasn't looked for it 2. He has no idea what he wants to do and he's always thinking of his old grad school(校友).
He's 3 at home with his parents and their relationship are getting tense, especially with his father, who 4 Chris for being lazy and afraid to 5 the real world.
Chris thinks his dad is being totally 6, after all, he's only young once and he needs some "space". During a recent 7, Chris said, "I'm not you, Dad. I have my own way of doing things. I want a job I 8." His dad replied, "That's a nice 9, but in the end they call it "work" because it's about making a productive living—not having fun."
There are many youngsters like Chris who are having trouble getting 10 with a serious job and becoming self-reliant. Some, like Peter Pan, just don't want to grow up. Some are afraid of 11 a wrong decision or of being rejected. Others are 12 of what psychologists call "magical thinking." They believe that when the time is right, everything will fall into place, so they 13 good chance to come knocking or until they feel encouraged to take their next step.
Unfortunately, it doesn't 14 that way. What's important is to begin. Things happen and opportunities 15 most often when we're moving, not standing 16. The ability to keep developing or being more 17 is very important. Basic physics says it's easier to 18 the course of a moving object than to start movement at the beginning. In the end, it's not really about finding yourself, 19 it's about making yourself.
The first steps are the 20, but the key to success in anything is getting started.
（1）A.reward B.job C.education D.advice
（2）A.seriously B.constantly C.publicly D.naturally
（3）A.studying B.sharing C.living D.communicating
（4）A.admires B.warns C.reminds D.blames
（5）A.face B.enter C.create D.seek
（6）A.uncomfortable B.unforgettable C.unreasonable D.unfashionable
（7）A.report B.conflict C.year D.development
（8）A.enjoy B.lack C.need D.offer
（9）A.time B.attitude C.plan D.idea
（10）A.relaxed B.started C.confused D.annoyed
（11）A.drawing B.judging C.making D.following
（12）A.victims B.partners C.volunteers D.assistants
（13）A.seek for B.turn to C.wait for D.benefit from
（14）A.matter B.continue C.work D.help
（15）A.remain B.lose C.prove D.appear
（16）A.alone B.still C.up D.outside
（17）A.cautious B.successful C.anxious D.considerate
（18）A.follow B.complete C.design D.change
（19）A.but B.and C.so D.then
（20）A.wisest B.best C.hardest D.slowest

查看答案和解析>>

科目：高中英語 來源： 題型：

【題目】Rocky Mountain Summer Adventure Camps Bring Learning to Life!

The Museum of Idaho Rocky Mountain Adventure Camps are available for students aged 6-14. Participants will have amazing outdoor experiences combined with adventure and fun. Space is limited to 20participants each session and registration is not complete until payment has been received by the Museum of Idaho. Registration fee is non-returnable.

Junior Adventure Camp

Children aged 6-9 (must have completed first grade).

Well conduct experiments, go on field trips, and discover the fun and excitement of science! This year, we will learn about colonial（殖民主義的）science to go along with our exhibit, America’s Revolution!

Instructor: Chloe Doucette

Dates: June 27- June30

Time: 9:00 a.m. - noon

Cost: $75 per child, $60 per child for MOI members, $50 each additional brother or sister

Original Camp

Children aged 9-12 (must have completed third grade)

Original Camp is for children who are ready for an exciting full-day outdoor camp. Participants visit various habitats and ecosystems as we explore eastern Idaho. Well go bird watching, hiking in the mountains, and lots more!

Instructors: Alana Jensen, Jerry Petty

Dates: July 18- July21

Time: 9:00 a.m. 4:00 p.m.(9:00-6:00 on the last day)

Cost: $150 per child, $125 per child for MOI members, $100 each additional brother or sister

High Adventure Camp

Youth aged 11-14 (must have completed fifth grade)

High Adventure Camp is for youth who are looking for an amazing summer adventure! This outdoor camp is full of exciting physical challenges and involves participants in even more in-depth activities than the Original Camp. This year, students will study how rattlesnakes experience the outdoors!

Instructors: Chloe Doucette, Mike Winston, Jerry Petty

Dates: August 8- August 11

Time: 9:00 a.m. 4:00 p.m.(9:00 6:00 on the last day)

Cost: $150 per child, $125 per child for MOI members, $100 each additional brother or sister

Participate in both Original AND High Adventure for only $200! Call522-1400 ext. 3002 to take advantage of this great offer. If you have any questions about the Museum of Idaho’s education programs, contact Chloe Doucette, Education Director at (208) 522-1400 ext.3002.

【1】If participants want to register successfully, they need to _________.

A. choose their favorite instructors

B. make up a team of 20 participants

C. be accompanied by family

D. pay for the fee ahead of time

【2】To make experiments, what will a 9-year-old boy choose?

A. Original Camp. B. Junior Adventure Camp.

C. High Adventure Camp. D. Three of them.

【3】How much will a child and his brother spend at least if they sign up for both Original and High Adventure Camp?

A. $400. B. $450.

C. $500. D. $550.

查看答案和解析>>

同步練習(xí)冊答案