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
科目:高中英语 来源:2017届甘肃省高三上第三次月考试英语卷(解析版) 题型:语法填空
阅读下面材料,在空白处填入适当的内容(1个单词)或括号内单词的正确形式。
One morning, I was waiting at the bus stop, worried about __1. (be) late for school. There were many people waiting at the bus stop, __2._ some of them looked very anxious and __3.__ (disappoint). When the bus finally came, we all hurried on board. I got a place next __4._ the window, so I had a good view of the sidewalk. A boy on a bike __5.__ (catch) my attention. He was riding beside the bus and waving his arms. I heard a passenger behind me shouting to the driver, but he refused __6._ (stop) until we reached the next stop. Still, the boy kept __7.__ (ride). He was carrying something over his shoulder and shouting. Finally, when we came to the next stop, the boy ran up the door of the bus. I heard an excited conversation. Then the driver stood up and asked, “__8.__ anyone lose a suitcase at the last stop?” A woman on the bus shouted, “Oh, dear! It’ s _9.__ (I)”. She pushed her way to the driver and took the suitcase thankfully. Five others on the bus began talking about what the boy had done and the crowd of strangers _10._ (sudden) became friendly to one another.
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科目:高中英语 来源:2017届河北定州中学高三上期周练英语试卷(解析版) 题型:阅读理解
Every one of us gets so used to punctuation marks that not many of us give them a second thought. Actually, the ancient Greeks wrote this way. The lack of punctuation marks probably didn’t bother good readers, though. As they read, they just put pauses where they fit best. Also at this time, sentences switched directions. A sentence read from
left to right. The next one read right to left, and then left to right again, etc. The ancient Romans sometimes punctuated like this: They put something that can separate words in a sentence. The word punctuation actually comes from this idea and the Latin word punctum,
which means a dot.
When the 5th century arrived, there were just two punctuation marks: spaces and points. The spaces separated words while the points showed pauses in reading. Then in the 13th century, a printer named Aldus Manutius tried to standardize punctuation. He always used a period for a complete stop at the end of a sentence. He used a slash (/) to indicate a short pause. Over time, that slash was shortened and curled, and it became the modern comma (逗号).
Since that time, other marks have enlarged the punctuation family. The exclamation mark (感叹号) comes from the Latin word io. It means “exclamation of joy.” The question mark originally started out as the Latin word questio, meaning question. Eventually, scholars put it at the end of a sentence to show a question.
Punctuation even keeps changing nowadays. New marks are coming into existence, and old punctuation marks are used in new ways. Take for example the “interrobang”. This 1962 invention combines the question mark and exclamation mark for times when writers want both. For example, “She did what?” or “How much did you pay for that dress?” Obviously, the interrobang is not widely used or recognized yet, but its invention shows that English is not yet finished with its punctuation.
1.From the first paragraph, we can know that _______.
A. good readers had trouble reading without punctuation marks
B. a sentence always read from left to right in ancient Greece
C. ancient Greeks switched the direction of punctuation marks
D. the use of punctuation marks can date back to ancient times
2.The passage is developed _______.
A. by time B. by space
C. by comparison D. by importance
3.We can learn from the passage that _______.
A. ancient Romans didn’t use any punctuation marks
B. exclamation and question marks came from Latin
C. spaces and slashes were already used before the 5th century
D. Aldus Manutius first started to use commas
4.What can be concluded from the last paragraph?
A. The combination of two marks will not work.
B. It takes time for people to accept new punctuation marks.
C. Old punctuation marks need to be standardized.
D. Punctuation marks are still changing today.
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科目:高中英语 来源:2017届河北定州中学高三上期周练英语试卷(解析版) 题型:单项填空
Although the evidence _______ Tom,he was still worried about whether he would win in the case.
A.favored B.benefited
C.supported D.appreciate
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科目:高中英语 来源:2017届四川宜宾市高三上期中考试英语试卷(解析版) 题型:书面表达
现在,越来越多的年轻人喜欢在网上点餐或打电话叫外卖,不愿意自己做饭,就这一现象结合下面的提示写一篇100词左右的短文。
1. 陈述现象;
2. 此现象的原因(至少2点);
3. 你个人的看法和选择。
注意: 1.词数100左右;
2.行文连贯,语篇完整;
3.文中不得透露个人真实信息。
参考词汇:take-out restaurant 外卖店,外卖餐馆
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科目:高中英语 来源:2016-2017学年安徽蚌埠二中高二上期中考试英语卷(解析版) 题型:短文改错
假如英语课上老师要求同桌之间交换修改作文,请你修改你同桌写的以下作文。文中共有10处语言错误,每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。
增加:在缺词处加一个漏字符号 ,并在其下面写出该加的词。
删除:把多余的词用斜线 \ 划掉。
修改:在错的词下面划一横线,并在该词下面写出改正后的词。
注意:
1. 每处错误及其修改均仅限一词;
2. 只允许修改10处,多者(从第11处起)不计分。
Li Ming and Wang Ying are two students of Senior Three. They all work hard but they have different learning method. Li Ming often sleeps in class instead of listen to the teacher.As a result,he miss lots of points that the teacher makes and it usually takes him much time to finish his homework.But he has to stay up late and doesn?t get enough sleep.However,Wang Ying has quite the different way of learning.She listens attentive and tries to catch everything that the teacher said in class.Because this,she spends less time doing her homework,which makes it is possible for her to go to bed early.
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科目:高中英语 来源:2016-2017学年安徽蚌埠二中高二上期中考试英语卷(解析版) 题型:阅读理解
阅读下列短文,从每题所给的四个选项中(A、B、C、D)中,选出最佳选项,并在答题卡上将该项涂黑。
A
In one of the old buildings near our school,one could see an old man sitting by a large window on the first floor,His name was James.During the three years at school,I had hardly ever found him missing from his usual position.
He was a high-ranking government official and lived happily with his wife .Once there was a bus accident,in which a number of passengers were seriously injured and taken to the hospital for treatment.James was responsible for the rescue operation.It was a big hospital,but James was shocked to notice how ill-equipped it was.There was no enough life-saving drugs and life-supporting equipment.The injured and their companions had to struggle there .James attempted to help .However,though he emptied his pockets,many of them died that day.
That was a turning point in his life.He made a decision to devote his life to helping others,particularly the poor and needy patients and their companions.He began to spend much of his income on these people.Since this required much time and energy,he found it difficult to fulfill his official duties and therefore chose to retire,which,in turn,reduced his income considerably.
His wife was deeply worried.Most of the time,James was out and paid least attention to home affairs.Meanwhile,as he was spending a lot helping others,she had struggle even to meet the household expenses.Though she was not against his helping the poor,she urged him not to ignore his own home and life,but it had no effect on him.She decided to leave him ,never to return.Though he continued his work, this was a great blow and did serious harm to his health and enthusiasm and he was soon forced to stay indoors.That was when he took his position by the window,spending his time looking outside.
A few weeks after my graduation,I returned to school,only to find the building gone.I heard that they were torn down.Everyone left except James.He refused to go and the next morning,he was found at his usual place by the window,dead.
1.What changed James view toward life?
A.The difficulties in his career.
B.The deaths in the bus accident.
C.The bad conditions in the hospital.
D.The responsibilities in the hospital.
2.James’wife left because
A.she was strongly against his deeds.
B.James paid little attention to his work
C.her work to support their daily-life was too tiring.
D.James failed to keep a balance between charity and home
3.The underlined word “this” in Paragraph 4 refers to
A.his decision to retire
B.the departure of his wife
C.the argument with his wife
D.his devotion to helping others
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科目:高中英语 来源:2016-2017学年湖北武汉外国语校高一上期中考英语卷(解析版) 题型:单项填空
The film brought the hours back to me _______ I was taken good care of in that faraway village.
A. untilB. thatC. whenD. where
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科目:高中英语 来源:2017届广东五校协作体高三上期第一次联考英语卷(解析版) 题型:书面表达
假如你是李华,即将参加高考,结束自己的高中生活。你想写一封电子邮件给一位你高中时期最尊敬的老师,对他或者她这几年来的关心和帮助表示感谢。
内容要求:
1. 他或者她最让你感动的一件事情
2. 你的感想
3. 对老师表示祝福
注意:
1. 不少于120词;
2. 不得透露与考生相关的姓名、学校名称以及地区名称等;
3. 可适当增加细节,以使行文连贯,表达顺畅。
Dear Mr./Ms. Wang,
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Yours sincerely,
Li Hua
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