Teenagers who do not get enough of the nutrie...

Teenagers who do not get enough of the nutrients commonly found in fruits and fish are easier to have bad lungs, coughing and wheezing （喘息）．Teens who eat the least of fruit and especially vitamin C have weaker lungs compared to the others．

Teens who take in less vitamin E, found in vegetable oil and nuts, are more likely to have asthma（哮喘）, Jane Bums at the Harvard School of Public Health found.

Based on these findings．Bums said that current recommended dose（一剂）of vitamin C, 85 mg a day, may not be enough for teens to have healthy lungs．Teens who eat less fruit and don't take in enough fatty acids （脂肪酸） are more likely to have asthma and the signs of breathing difficulty．

Proper amounts of fatty acids are protective, Bums said, though fish, the best source of fatty acids, is particularly unpopular with teenagers．Fatty acids are also found in some nuts as well as some green vegetables'．Smokers who avoid vitamin C will increase their chances of coughing, wheezing and developing phlegm（痰）．

More than 80 percent of teens are getting their recommended doses of vitamin C - mainly from fruit drinks．"I wouldn't approve of drinking them, but at least they're getting their vitamin C from somewhere," Burns said．

Burns added that there are several different ways to get the necessary nutrients．"I think vitamin supplements are fine．I think adding vitamin D to orange juice is fine．But I do think there are added benefits that we don't fully understand of eating whole foods like fruits and vegetables and fish," she said．The researchers did not account for poverty and other factors that often distinguish less-healthy eaters and may explain their findings．

1.According to the passage, what is the problem with teens who don't get enough nutrients?

A．They are becoming smokers．             B．They don't take enough exercise．

C．They eat too much fruit and fish．          D．They are likely to have weaker lungs．

2.According to Burns, how should teens get the necessary nutrients?

A．By drinking juice as much as possible．

B．By eating more whole foods．

C．By taking vitamin pills．

D．By giving up smoking．

3.Which of the following is NOT mentioned by the researchers in the passage?

A．The amount of nutrients teens should take in a day．

B．How teens can take in enough nutrients．

C．Whether poor teens can prove their findings．

D．The fact that teens don't like fish．

4.What is the best title for the passage?

A．Poor nutrition hurts teens' health．         B．Teens lack proper nutrition．

C．Teens are easy to suffer from diseases．      D．More fruit help keep teens healthy．

高三英语阅读理解中等难度题查看答案及解析

Surveys of American teenagers find that about half of them do not get enough sleep on school nights. They get an average of 60 to 90 minutes less than experts say they need.

Experts say teens are biologically programmed to go to sleep later and wake up later than other age groups. Yet many schools start classes as early as seven in the morning.

As a result，many students go to class feeling like Danny，16 years old. He plays two sports，lacrosse and football. He is an active teen—except in the morning. DANNY：“Getting up in the morning is pretty terrible. I’m just very out of it and tired. And through first and second period I can hardly stay awake.”

Michael Breus，a clinical psychologist with a specialty in sleep disorders says：“These aren’t a bunch of lazy kids—although，you know，teenagers can of course be lazy. These are children whose biological rhythms，more times than not，are off.”Teens，he says，need to sleep eight to nine hours or even nine to ten hours a night. He says sleepy teens can experience a form of depression that could have big effects on their general well-being. It can affect not just their ability in the classroom but also on the sports field and on the road because any tired driver is dangerous，especially a teenager with a lack of experience.

So what can schools do about sleepy students？The psychologist says one thing they can do is start classes later in the morning.

Eric Peterson，head of St.George’s School in the northeastern state of Rhode Island，says，“In the end，schools ought to do what’s the right thing for their students，first and foremost.”And he wanted to see if a 30-minute delay would make a difference. It did.

1.According to the passage，which of the following is the chief cause of sleepy teenagers？

2.According to Michael Breus，________.

3.What is Eric Peterson’s opinion on the issue？

4.What does the underlined word“It”in the last sentence might refer to？

5.What can you infer might follow the passage immediately？

高三英语阅读理解中等难度题查看答案及解析

As far as we know, half of Canadian teenagers do not get enough sleep on school nights, _____?

高三英语单项填空困难题查看答案及解析

As far as we know, half of Canadian teenagers do not get enough sleep on school nights, _____?

A．do they                               B．don’t they

C．don’t you                            D．isn’t it

高三英语单项填空中等难度题查看答案及解析

阅读下面材料，在空白处填写1个适当的单词或用括号内单词的正确形式。

Nearly 790 million people around the world do not get enough to eat, most of 1. live in developing countries.

A group of researchers in California may have found a way 2.(help) feed the hungry people. Stephen Mayfield, a professor at the University of California, studies on algae(藻类). He says, “The world, in fact, is not short of calories. 3. it is short of is proteins(蛋白质) and essential fatty acids(脂肪酸). Algae are 4.(natural) very high in proteins and fatty acids and those are sort of the two things that the world really needs.”

Mayfield and his team have made algae 5. different kinds of food. Not only is the algae food rich in protein and fatty acids, but it also 6.(taste) pretty good.

And growing algae uses 7.(little) land than other kinds of protein. Mayfield’s big idea is that algae farms could one day replace the huge amounts of land 8.(use) by farmers to produce protein from cattle or soybeans.

Mayfield’s team just successfully finished a test in which they grew algae in an outdoor environment. “Algae food 9.(product) are not yet available for sale. But in the future algae may help feed people threatened by 10.(starve),” says Mayfield.

高三英语语法填空中等难度题查看答案及解析

Do you dream of the day when you can drive a car? In the United States, teenagers can get their driver’s license when they are only 16 years old, but it feels like forever until that day comes. Trust me, because I’ve been there.

1. But in my opinion, it’s worth it because it means having a lot of freedom. 2. and everything there is really spread out. So until I turned 16, my parents had to drive me pretty much everywhere.

There were several steps before I got that special plastic card. In Iowa, everyone can get their learner’s permit at the age of 14, which means you can only drive if your parent is sitting in the seat next to you.

3. In the state of Iowa, if you live more than a mile (1.6km) away from school you can get a school permit. You can only drive to school and back home. Luckily, I lived just over a mile away from school, so I was able to drive my mom’s car to school. 4.

Finally, after taking (and passing) a three-month-long driver’s education course and the final test, I was able to get my driver’s license. 5. It did in fact make life quite a bit easier.

A. I could almost taste the freedom already.

B. Still, on the day of my driver’s test, I was nervous.

C. The next step was to get my school permit at the age of 15.

D. Getting a driver’s license takes a lot of time and energy.

E. I’m from the rural state of Iowa that doesn’t have a lot of public transportation.

F. To many people, getting a driver’s license is a rite of passage (仪式) that involves a lot of luck.

G. But if you were caught going outside that route you would get in big trouble.

高三英语七选五中等难度题查看答案及解析

Stepping into a pool of water is common enough, but who could ever imagine stepping into a pool of fish? In February of 1974, Bill Tapp, an Australian farmer, saw a rain of fish that covered his farm. How surprised he must have been!

What caused this strange occurrence? This is a question that had long puzzled people who study fish. The answer turned out to be a combination of wind and storm.

When it is spring in the northern part of the world, it is fall in Australia. Throughout the autumn season, terrible storms arise and rains flood the land. The strong winds sweep over Australia like huge vacuum cleaners (吸尘器), collecting seaweed, pieces of wood, and even schools of fish. Strong winds may carry these bits of nature for many miles before vacuum dropping them on fields, houses, and astonished people.

Although they seem unusual, fish-falls occur frequently in Australia. When Bill Tapp was asked to describe the scene of fish, he remarked, “They look like millions of dead birds falling down.” His statement is not surprising. The wonders of the natural world are as common as rain. Nature, with its infinite wonders, can create waterfalls that flow upward and fish that fall out of the sky.

1. What is this passage about?

A. A sad story.                     B. Australia’s northern part.

C. A rain of fish.                   D. The damage done by floods.

2. Fish-falls occur in Australia __________.

A. quite often                      B. on large farms

C. only in winter                   D. when the air is calm

3.The underlined word “infinite” is closest in meaning to “__________”.

A. easy        B. difficult          C. countless         D. dangerous

高三英语阅读理解中等难度题查看答案及解析

______ most of us are satisfied with the nutrients we’re getting from our diets, they are actually far from enough.

A.While B.If C.Since D.Before

高三英语单项填空简单题查看答案及解析

I have a friend who says that every day she tries to do a good deed and not get “found out”. The friend tells a(n) _______ story about how this started. She was assigned to take a bouquet(束) of flowers into a nursing home and walk out before the receiver can express _______.

She did it and made a _______ escape, saying the receiver looked pleasantly puzzled. Feeling excited, she _______ took out her phone, eager to tell her friend the _______. Luckily, she prevented herself before she made the _______ and put the cell phone away.

This is where the exercise took on an unexpected dimension. She _______ that when we tell others about the “good deeds” we do, we are getting the _______ right there. But, by keeping it _______ and not telling anyone, we are training a feeling inside ourselves that she ________ “a ray of sunshine inside our hearts”.

I tell my students this story every year and ________ them to do a good deed and not get ________. During our class discussion, a truly ________ student commented that my friend should have ________ and asked to talk to the receiver of the flowers, letting him know ________ the flowers were left for him. The student said that if someone really wanted to help ________ people, they should visit them once a week and get to know them.

________ with the idea, the students asked if we could try this as a class. We actually found an organization that helps ________ students with seniors who need companionship. ________, we are moving forward to try this ________, thanks to the student taking this story in a new and powerful direction.

1.A.plain B.amusing C.inspiring D.ridiculous

2.A.regret B.anxiety C.concern D.appreciation

3.A.clean B.brave C.interesting D.cautious

4.A.thankfully B.immediately C.patiently D.widely

5.A.arrangement B.adventure C.news D.experience

6.A.decision B.call C.choice D.comment

7.A.realized B.doubted C.admitted D.reminded

8.A.suggestion B.plan C.reward D.chance

9.A.simple B.open C.secret D.valuable

10.A.knew about B.described as C.judged from D.translated into

11.A.force B.threaten C.persuade D.encourage

12.A.discovered B.discouraged C.changed D.paid

13.A.thoughtful B.merciful C.modest D.diligent

14.A.imagined B.donated C.responded D.returned

15.A.how B.when C.why D.where

16.A.disabled B.injured C.healthy D.lonely

17.A.Impressed B.Confused C.Satisfied D.Annoyed

18.A.combine B.compare C.unite D.match

19.A.Suddenly B.Occasionally C.Currently D.Strangely

20.A.offer B.opinion C.arrangement D.task

高三英语完形填空中等难度题查看答案及解析

I have a friend who says that every day she tries to do a good deed and not get “found out”. The friend tells a(n) ____ story about how this started. She was assigned to take a bouquet(束) of flowers into a nursing home and walk out before the receiver can express ____.

She did it and made a ____ escape, saying the receiver looked pleasantly puzzled. Feeling excited, she ____ took out her phone, eager to tell her friend the ____. Luckily, she prevented herself before she made the ____ and put the cell phone away.

This is where the exercise took on an unexpected dimension. She ____ that when we tell others about the “good deeds” we do, we are getting the ____ right there. But, by keeping it ____ and not telling anyone, we are training a feeling inside ourselves that she ____ “a ray of sunshine inside our hearts”.

I tell my students this story every year and ____ them to do a good deed and not get ____. During our class discussion, a truly ____ student commented that my friend should have ____ and asked to talk to the receiver of the flowers, letting him know ____ the flowers were left for him. The student said that if someone really wanted to help ____ people, they should visit them once a week and get to know them.

___ with the idea, the students asked if we could try this as a class. We actually found an organization that helps ____ students with seniors who need companionship. ____, we are moving forward to try this ____, thanks to the student taking this story in a new and powerful direction.

1.A. plain　　 B. amusing　　 C. inspiring　　 D. ridiculous

2.A. regret　　 B. anxiety　　 C. concern　　 D. appreciation

3.A. clean　　 B. brave　　 C. interesting　　 D. cautious

4.A. thankfully　　 B. immediately　　 C. patiently　　 D. widely

5.A. arrangement　　 B. adventure　　 C. news　　 D. experience

6.A. decision　　 B. call　　 C. choice　　 D. comment

7.A. realized　　 B. doubted　　 C. admitted　　 D. reminded

8.A. suggestion　　 B. plan　　 C. reward　　 D. chance

9.A. simple　　 B. open　　 C. secret　　 D. valuable

10.A. knew about　　 B. described as　　 C. judged from　　 D. translated into

11.A. force　　 B. threaten　　 C. persuade　　 D. encourage

12.A. discovered　　 B. discouraged　　 C. changed　　 D. paid

13.A. thoughtful　　 B. merciful　　 C. modest　　 D. diligent

14.A. imagined　　 B. donated　　 C. responded　　 D. returned

15.A. how　　 B. when　　 C. why　　 D. where

16.A. disabled　　 B. injured　　 C. healthy　　 D. lonely

17.A. Impressed　　 B. Confused　　 C. Satisfied　　 D. Annoyed

18.A. combine　　 B. compare　　 C. unite　　 D. match

19.A. Suddenly　　 B. Occasionally　　 C. Currently　　 D. Strangely

20.A. offer　　 B. opinion　　 C. arrangement　　 D. task

高三英语完形填空中等难度题查看答案及解析