Think about vitamin D when you’re catching up on summer rays. It’s sometimes called the “sunshine vitamin” because it’s produced in your skin in response to sunlight. Vitamin D is a fat-soluble (脂溶性的) vitamin in a family of compounds that includes vitamins D-1, D-2, and D-3. It can affect as many as 2,000 genes in the body.
Vitamin D has several important functions. Perhaps the most vital are regulating the absorption of calcium and phosphorous（磷）, and promoting normal immune system function. Getting enough vitamin D is important for normal growth and development of bones and teeth, as well as improving resistance against certain diseases.
In addition to its primary benefits, research suggests that vitamin D may also play a role in:
reducing your risk of multiple sclerosis（多发性硬化）, according to a 2006 study published in the Journal of the American Medical Association
decreasing your chance of developing heart disease, according to 2008 findings published in Circulation
helping to reduce your possibility of developing the flu, according to 2010 research published in the American Journal of Clinical Nutrition
regulating mood and warding off depression
losing weight or preventing heart disease
How do you get it? Your body produces vitamin D naturally when it is directly exposed to sunlight. A little can go a long way. All you need is 10 minutes a day of midday, pre-sunscreen sun exposure,especially if you have fair skin. Besides getting vitamin D through sunlight, you can also get it through certain foods and supplements to ensure adequate levels of the vitamin in your blood.
1.Why is Vitamin D sometimes called “Sunshine Vitamin”?
A. Because it is produced in your skin reacting to sunlight.
B. Because it is named a fat-soluble vitamin.
C. Because it is produced with enough sunshine.
D. Because it is like sunshine in summer.
2.How can a person ensure enough Vitamin D in his/ her body?
A. He/ She could ask doctors for help.
B. He/ She should walk a long way in the sunlight.
C. He/ She should be exposed to sunlight for a long time.
D. He/ She should get it through sunlight, foods and supplements.
3.Which of the following is NOT the function of Vitamin D?
A. Preventing heart disease.
B. Helping the body grow normally.
C. Producing calcium and phosphorous.
D. Decreasing anxiety and nervousness.
4.Which is the best title of the passage?
A. Vitamin D Family
B. Vitamin D, You Need It
C. Ways to get Vitamin D
D. A Good Medicine—Vitamin D
高三英语阅读理解中等难度题
Think about vitamin D when you’re catching up on summer rays. It’s sometimes called the “sunshine vitamin” because it’s produced in your skin in response to sunlight. Vitamin D is a fat-soluble (脂溶性的) vitamin in a family of compounds that includes vitamins D-1, D-2, and D-3. It can affect as many as 2,000 genes in the body.
Vitamin D has several important functions. Perhaps the most vital are regulating the absorption of calcium and phosphorous（磷）, and promoting normal immune system function. Getting enough vitamin D is important for normal growth and development of bones and teeth, as well as improving resistance against certain diseases.
In addition to its primary benefits, research suggests that vitamin D may also play a role in:
reducing your risk of multiple sclerosis（多发性硬化）, according to a 2006 study published in the Journal of the American Medical Association
decreasing your chance of developing heart disease, according to 2008 findings published in Circulation
helping to reduce your possibility of developing the flu, according to 2010 research published in the American Journal of Clinical Nutrition
regulating mood and warding off depression
losing weight or preventing heart disease
How do you get it? Your body produces vitamin D naturally when it is directly exposed to sunlight. A little can go a long way. All you need is 10 minutes a day of midday, pre-sunscreen sun exposure,especially if you have fair skin. Besides getting vitamin D through sunlight, you can also get it through certain foods and supplements to ensure adequate levels of the vitamin in your blood.
1.Why is Vitamin D sometimes called “Sunshine Vitamin”?
A. Because it is produced in your skin reacting to sunlight.
B. Because it is named a fat-soluble vitamin.
C. Because it is produced with enough sunshine.
D. Because it is like sunshine in summer.
2.How can a person ensure enough Vitamin D in his/ her body?
A. He/ She could ask doctors for help.
B. He/ She should walk a long way in the sunlight.
C. He/ She should be exposed to sunlight for a long time.
D. He/ She should get it through sunlight, foods and supplements.
3.Which of the following is NOT the function of Vitamin D?
A. Preventing heart disease.
B. Helping the body grow normally.
C. Producing calcium and phosphorous.
D. Decreasing anxiety and nervousness.
4.Which is the best title of the passage?
A. Vitamin D Family
B. Vitamin D, You Need It
C. Ways to get Vitamin D
D. A Good Medicine—Vitamin D
高三英语阅读理解中等难度题查看答案及解析
Summer vacation is the perfect time to catch up on all that reading you couldn't do during the busy school year・Here are some of the best YA books to read this summer.
◆Skyward by Brandon Sanderson
More than anything, Spensa wants to become a pilot and defend her planet against the frequent attacks from alien starfighters ・ When she discovers the wreckage （残骸）of an old battleship, she realizes that her dreams might be within reach.
◆ Two Can Keep a Secret by Karen M. McManus
Put on your crime-solving cap and get swept away in this thrilling novel about a girl, a boy, and a string of unsolved murders・ As threats and clues pile up, you'll be burning the midnight oil trying to finish the book before dawn.
◆Bridge of Clay by Markus Zusak
The five Dunbar brothers haven't seen their father in eight years. When he reappears and asks for help building a bridge, only the middle brother, Clay, agrees to go with him. Unforgettable and touching, it is a must-read story .
♦If I'm Being Honest by Emily Wibberley and Austin Siegemund-Broka
In an effort to win her boyfriend back, Cameron decides to become a nicer person and make up for people she's hurt. Loosely based on Shakespeare's The Taming of the Shrew, this is a delightfully sweet and positive tale of self-discovery, and true love.
1.Who may be interested in Skyward?
A.Pilots on battleships. B.Fans of outer space.
C.Peace keepers. D.Planet defenders.
2.Which book is probably a detective story?
A.Skyward B.Two Can Keep a Secret
C.Bridge of Clay D.If I'm Being Honest
3.What is special about If I'm Being Honest?
A.It is a work of joint authors.
B.It is one of Shakespeare's plays.
C.It mainly talks about being honest.
D.It appeals to readers feeling hopeless.
高三英语阅读理解简单题查看答案及解析
When you think of batteries, you’ll likely think about them powering up remote controls, cellphones, flashlights and toys. But some people carry a battery around in their body to power a pacemaker (起搏器). It isn’t really pleasant and easy to carry batteries because they need to be replaced so often and they can leak poisonous chemicals. A battery-powered pacemaker may become a thing of the past, thanks to a new technology developed by UCLA researchers: a biological supercapacitor (超级电容器), which is thinner than several hairs.
Teams of researchers at UCLA and the University of Connecticut published a paper in a journal explaining their new invention. The supercapacitor is made from a carbon material, and coated with human-like proteins that act as electrodes (电极). But what makes the device different is that it is powered by an energy harvester that changes body heat and movement in the blood into energy.
Those traditional pacemakers are six to eight millimeters thick. They are much bigger. The new supercapacitor, which, due to its lack of battery, is only one micrometer thick. This “little” feature could benefit the new pacemaker’s energy efficiency, researchers stated. Also, unlike other batteries used in medical treatments, the supercapacitor can bend and twist in the body without suffering damage.
Though they’ve not been widely used in the medical world, supercapacitors have the ability to serve as a safer and more efficient medical device than the traditional battery-operated devices, the researchers believe.
“In order to be effective, battery-free pacemakers must have supercapacitors that can get, store and transport energy. However, commercial supercapacitors are too slow to make them work,” said Maher El-Kady, a UCLA researcher and a co-author of the study. “Our research focused on the custom-designed supercapacitor to capture energy effectively, and finding a way to make it exist together successfully with the human body.”
1.What do we know about traditional pacemakers?
A.They are very popular with users.
B.They can do harm to the users’ bodies.
C.They need to be replaced quite often.
D.They are really convenient to carry around.
2.What is special about the new supercapacitor?
A.It has electrodes on the outside.
B.It is made from a kind of protein material.
C.It can transform the energy from the body.
D.It helps save the carriers’ money and energy.
3.Which of the following makes the new pacemaker energy-efficient?
A.The small size.
B.The small battery.
C.The energy harvester.
D.The bending and twisting characters.
4.What is the best title for the text?
A.A New Technology to Downsize Batteries.
B.A New Battery-free Pacemaker.
C.A Smaller Battery-powered Pacemaker.
D.A Great Contribution Made by UCLA Researchers.
高三英语阅读理解中等难度题查看答案及解析
How did you such a clever way out of difficulty?
| A．think over | B．think about | C．think up | D．think on |
高三英语单项填空简单题查看答案及解析
(2013·大连二模)—When choosing furniture, you only focus on function while I think more about the design.
—That's ________ we differ.
A．how B．what
C．which D．where
高三英语单项填空中等难度题查看答案及解析
(2014·辽宁大连高三双基测试)—When choosing furniture，you only focus on function while I think more about the design.
—That’s________we differ.
A．how B．what
C．which D．where
高三英语单项填空中等难度题查看答案及解析
________ your spirits. Try again and you’ll succeed.
| A．Catch up | B．Catch on | C．Keep up | D．Keep on |
高三英语单项填空简单题查看答案及解析
①When we think of humor, we generally think about entertainment - enjoying a stand-up comedy or watching a funny film. But psychologists believe humor can also help improve our mental health and promote social bonding.
②Rod Martin at the University of Western Ontario examined the relation-ship between a sense of humor and psychological wellbeing. He found individuals with a good sense of humor had higher levels of self-esteem (自尊), were more positive in the face of challenging life events, and had more self-protective ways of coping with stress
③However, this finding is only corelational. It could be that a good sense of humor fosters the positive qualities, and that high levels of self-esteem and a positive mindset may be what allows an individual to develop a good sense of humor. To prove it, researchers randomly appointed 55 adults to three courses: a humor group, a social group, and a control group. At the end of the courses, those in the humor group scored significantly higher on levels of emotional wellbeing and showed decreased levels of stress and anxiety. The researchers also tested the effects of attending parties as well as watching comedies and funny films. They found that these positive social activities also made these adults more humorous and welcome.
④Wellbeing in the workplace can also be increased by humor. Both Eric Romero and Kevin Cruthirds at the University of Texas found encouraging moments of jokes among colleagues were generally associated with increased work performance and decreased reports of stress. However, they also raise a caution: any positive result depends on the jokes in question. That the type of humor is key to its benefits clarifies why positive findings in this area are often weak or unclear. As some researchers wisely point out, the problem is that too few of them begin by defining clearly what humor is. He believes there are two types: adaptive and maladaptive (适应不良的).
⑤Adaptive humor encourages us to feel closer to others and better about ourselves, whereas maladaptive humor is self-defeating, rude and aggressive. Maladaptive humor leads only to lower self-esteem and a distance between you and your colleagues.
⑥The conclusion? Humor can definitely help you, not only with your mental wellbeing, but also with your colleague relationships - only if it's adaptive, self-enhancing and acceptable. All in all, kindness is the key.
1.What did Rod Martin find about humorous people?
A. They liked seeing funny performances.
B. They used humor to increase self-esteem.
C. They tended to enjoy better mental health.
D. They attached more importance to self-protection.
2.By saying the underlined part in Paragraph 3, the author wants to show .
A. humor and positive qualities affect each other
B. humor plays a role only in certain cases
C. the finding needs to be further improved
D. there's still strong argument on the finding
3.According to Paragraph 4 , why are positive findings about office humor often weak?
A. Workplace is a special place for people to tell jokes.
B. There are too many factors affecting the results.
C. There's not enough evidence to show its effects.
D. Different types of humor may have different effects.
4.What is suggested by the author about humor?
A. Put yourself in others' shoes when telling jokes.
B. Avoid hurting others when telling jokes.
C. Pay attention to the occasion of your jokes.
D. Get used to others' jokes about you.
5.Which of the following best shows the structure of the passage?
A. ①-②③-④-⑤⑥ B. ①②-③④-⑤⑥
C. ①②-③-④⑤-⑥ D. ①-②③-④⑤-⑥
高三英语阅读理解中等难度题查看答案及解析
As recently as 15 years ago, if you wanted to catch up on the news, you could look at a handful of publications or a few nightly programs. And if you wanted to listen to music, you could turn on MTV or fiddle with your radio. People in major cities had more options, because a large population can support specialty shops. 1..
Today, as we all know, access to information has exploded. One consequence, according to Toure, a cultural critic writing in Salon, is that the ability of pop culture to unify us-- he refers to the massive interest in Michael Jackson’s Thriller, or Nirvana’s Nevermind--has been eroded, probably forever. Steven Hyden, also writing in Salon, counters that whatever the advantages and disadvantages of a centralized pop-culture authority, the monoculture never actually existed.
2. Even when it supposedly existed, its content largely depended on other characteristics of your little corner of the world. In the 1992-1993 school year, I was a student at a multiracial and relatively urban junior high school in California’s central valley. We listened to Salt-n-Pepa, Snoop Doggy Dogg, and Kris Kross, with the latter having inspired a trend in which kids wore their clothes backwards. The next year I was enrolled in a mostly white junior high school in leafy Chiago suburb. One of the houses was famous for having appeared in the 1990 film “Home Alone”; the popular bands were Nirvana, Hole and the Smashing Pumpkins; and the biggest pop-cultural event of the school year was Kurt Cobain’s suicide.
But Toure’s point is about the virtues of common cultural experience. It seems he is recalling centralized media only in so far as it’s a distribution system that fostered ( 促进) that outcome.
3. It doesn’t matter whether a record is released by an important label or an indie ( 独立制片人); if it’s online, people can usually find, forward, share and promote it. But what’s interesting and perhaps surprising, given that both Toure and Mr Hyden seem to agree that the old distribution favored big media, is that we still have widely shared cultural experiences. Just think of Barack Obama doing the little hand gesture from Beyonce’s “Single Ladies ” video.
4.. It’s safe to say that the monoculture never really existed, and that some artists still reach a wide audience, whether we like it or not.
A.That suggests that we like pop culture partly because it’s a shared experience, regardless of quality.
B.However, in vast areas of the world you had to work to get outside the mainstream.
C.Whether you like it or not, “monoculture” is here with us.
D.I think Mr Hyden is correct that the concept of a “monoculture” is a bit of a myth.
E.They see globalization as being the spread of a monoculture, based on western values, which is killing the cultural diversity of the world.
F.And it’s true that the ways we now consume pop culture to some extent level the playing field.
高三英语六选四中等难度题查看答案及解析
“When I grow up, I want to be...”
Almost all of us have thought about, or been asked to think about, our future careers. Our answers may differ greatly. Even now your aspirations may have changed from when you were in primary school.
However, it seems career options aren’t only based on personal taste. In a survey carried out by Teens, doctors, lawyers, and bankers were some of most popular careers that people said they hoped to follow. This is in line with a similar survey carried out in the UK in May 2011 by job website monster. Co.uk, in which medicine was the top choice among UK teenagers aged between 13 and 17.
Medicine and law are two of the oldest and best known professions. Their prestige (威望) may come from the fact that doctors and lawyers are some of the most esteemed members of society, and they make good money. Joining these high-profile professions is often seen as a sign of upward social mobility.
It is equally unsurprising that banking is now one of the most common career choices. Youngsters worldwide think of banking and see the money rolling in. Wealth is increasingly becoming one of the most important indicators of a successful career. British young men list the UK tycoon Alan Sugar, Microsoft founder Bill Gates and Facebook chief Mark Zuckerberg as their top role models “for their wealth”. Just as Chinese teenagers see being a banker as a good and fun pathway to “wealth”.
However, not every child has the makings of doctor, lawyer, or banker. They are those who see fulfillment and happiness in other areas, and many teenagers dare to ink more individuality into their career options. As the Teens’ survey discovered, a variety of unconventional jobs---coffee shop owner, gourmet(美食家)，waiter at a fast food restaurant---are among teenagers’ career choices. They can be equally interesting and rewarding jobs.
With every choice comes responsibility and challenge, and all career paths require specific education and training, you have to learn to balance optimism and confidence with being realistic about your particular talents and skills.
1.What is the passage mainly about?
A. Careers in teenagers’ mind.
B. Choosing a good job is very important.
C. Teenagers in the UK like doctors.
D. The choice of career needs challenge.
2.What is the top career choice among UK teenagers aged between 13 and 17 according to the article?
A. Medicine B. Law C. Bank D. Education
3.According to the article, all of the following are the benefits of being a doctor except_______.
A. respect from others B. the oldest profession
C. high pay D. upward social mobility.
4.What can we learn from the last paragraph?
A. According to your particular talents and skills, you can choose your favorite career.
B. Specific education and training can help get a good job.
C. Whatever career you choose, you should balance optimism and confidence with being realistic about your particular talents and skills.
D. Responsibility is the most important when you choose a good job.
高三英语阅读理解中等难度题查看答案及解析