Vitamin D is essential for bone-building,cognitive function,joint health,immune function,blood sugar control, positive mood and more.It can help prevent many diseases.Some studies suggest that the lower your vitamin D level is,the higher your risk of death from any cause will be.However,it's not a great idea to just grab a supplement（补充物）off the drugstore shelf and start taking it.
Since many of us are deficient in vitamin D,also known as the "sunshine vitamin”,doctors will often give us a prescription（处方）for high levels of vitamin D supplements,with doses ranging from 2,000 to 10,000 IU (International Units) per day,up to 50,000 IU per week,and sometimes even more.But like all good things,it's possible to get too much of it."Very big doses of vitamin D can cause a build-up of calcium in the blood,which leads to nausea,vomiting,poor appetite,weakness,and weight loss,"says Madeline Basler of Real You Nutrition.Here's the bigger issue: any extra intake of,vitamin D can get stored in the body."A build-up of stored vitamin D can cause avoidable problems,"says Marra Francis,Medical Director at Everly Well,"leading to problems such as kidney stones."
The average daily recommended amounts vary based on your age.The National Institutes of Health set the Recommended Dietary Allowance for vitamin D at 600 IU daily for infant,children,and adults up to 70 years old. Adults aged 71 and older need 800 IU,since the ability to absorb vitamin D drops with age.People who are obese may also need more vitamin D because the fat cells take it up,making it less available for use by the body.In winter when you're getting less sun exposure,some experts say it's safe to take daily doses of around 1,000 to 2,000 IU without any risk of complications（并发症）.
Though you'll get a bit of vitamin D from foods—including fatty fish beef liver,cheese,egg yolks and mushrooms,plus fortified foods like milk,orange juice,and cereal—the amounts are so small that there's little need to worry that they’ll put you over the daily does.
1.What can we infer from Paragraph 1?
A. We can actually reduce the risk of death.
B. People don't really know vitamin D well.
C. Vitamin D supplements are necessary for everyone.
D. Vitamin D should be supplemented carefully despite its importance.
2.The underlined part "are deficient in" in Paragraph 2 probably means “ ”.
A. having an inadequate amount of B. paying much attention to
C. being interested in D. being concerned about
3.How much vitamin D should a healthy 60-year-old lady take daily in summer?
A. About 800 IU. B. About 600 IU.
C. No less than 1,000 IU. D. No less than 5,000 IU.
4.What does the last paragraph mainly talk about?
A. What other ways people can take to get vitamin D.
B. What foods we should eat every day to balance our diets.
C. Whether daily foods would overdose people with vitamin
D. D.Whether vitamin D can be supplemented by the foods we eat.
高三英语阅读理解中等难度题
Vitamin D is essential for bone-building,cognitive function,joint health,immune function,blood sugar control, positive mood and more.It can help prevent many diseases.Some studies suggest that the lower your vitamin D level is,the higher your risk of death from any cause will be.However,it's not a great idea to just grab a supplement（补充物）off the drugstore shelf and start taking it.
Since many of us are deficient in vitamin D,also known as the "sunshine vitamin”,doctors will often give us a prescription（处方）for high levels of vitamin D supplements,with doses ranging from 2,000 to 10,000 IU (International Units) per day,up to 50,000 IU per week,and sometimes even more.But like all good things,it's possible to get too much of it."Very big doses of vitamin D can cause a build-up of calcium in the blood,which leads to nausea,vomiting,poor appetite,weakness,and weight loss,"says Madeline Basler of Real You Nutrition.Here's the bigger issue: any extra intake of,vitamin D can get stored in the body."A build-up of stored vitamin D can cause avoidable problems,"says Marra Francis,Medical Director at Everly Well,"leading to problems such as kidney stones."
The average daily recommended amounts vary based on your age.The National Institutes of Health set the Recommended Dietary Allowance for vitamin D at 600 IU daily for infant,children,and adults up to 70 years old. Adults aged 71 and older need 800 IU,since the ability to absorb vitamin D drops with age.People who are obese may also need more vitamin D because the fat cells take it up,making it less available for use by the body.In winter when you're getting less sun exposure,some experts say it's safe to take daily doses of around 1,000 to 2,000 IU without any risk of complications（并发症）.
Though you'll get a bit of vitamin D from foods—including fatty fish beef liver,cheese,egg yolks and mushrooms,plus fortified foods like milk,orange juice,and cereal—the amounts are so small that there's little need to worry that they’ll put you over the daily does.
1.What can we infer from Paragraph 1?
A. We can actually reduce the risk of death.
B. People don't really know vitamin D well.
C. Vitamin D supplements are necessary for everyone.
D. Vitamin D should be supplemented carefully despite its importance.
2.The underlined part "are deficient in" in Paragraph 2 probably means “ ”.
A. having an inadequate amount of B. paying much attention to
C. being interested in D. being concerned about
3.How much vitamin D should a healthy 60-year-old lady take daily in summer?
A. About 800 IU. B. About 600 IU.
C. No less than 1,000 IU. D. No less than 5,000 IU.
4.What does the last paragraph mainly talk about?
A. What other ways people can take to get vitamin D.
B. What foods we should eat every day to balance our diets.
C. Whether daily foods would overdose people with vitamin
D. D.Whether vitamin D can be supplemented by the foods we eat.
高三英语阅读理解中等难度题查看答案及解析
Vitamin D is necessary for bone-building, immune function, blood sugar control, positive mood and more. 1. The lower your vitamin D level is, the higher your risk of death from ally cause will be. However, it’s not a great idea to just take a supplement (补品) off the drugstore shelf and start taking it.
Since many of us have an inadequate amount vitamin D, also known as the “sunshine vitamin”, doctors will often give us high levels of D supplements, with doses ranging from 2,000 to 10,000 IU (International Units) per day, up to 50,000 IU per week and sometimes even more. 2. Very big doses ( 剂量) of vitamin D can cause a build-up of calcium ( 钙) in the blood, which leads to poor appetite, weakness, weight loss or other diseases. Here’s the bigger issue: 3. A build-up of stored vitamin D cart cause avoidable problems, leading to problems such as kidney stones.
4. The National Institutes of Health set the Recommended Dietary Allowance for vitamin D at 600 IU daily for babies, children, and adults up to 70 years old. Adults aged 71 and older need 800 IU, since the ability to absorb vitamin D drops with age. Because the fat cells take vitamin D up, making it less available for use by tile body, 5.
Though you’ll get a bit of vitamin D from foods—including fatty fish, beef liver, cheese, milk and so on—the amounts are so small that there’s little need to worry that they’ll put you over the daily dose.
A.It can help prevent many diseases.
B.We can actually reduce the risk of death.
C.people who are fat may also need more vitamin
D.any extra intake of vitamin D can get stored in the body.
E.But like all good things, it’s possible to get too much of it.
F.The average daily recommended amounts vary based on your age.
G.Vitamin D should be supplemented carefully despite its importance.
高三英语七选五中等难度题查看答案及解析
_______naturally by the skin when exposed to sunlight, Vitamin D is needed for healthy bones, teeth and muscles.
A. Making B. To make
C. Made D. Make
高三英语单项填空困难题查看答案及解析
Organic exercise is a good fit for people looking to train functionally. It is defined as exercise that is similar to the type of physical activity performed by ancient hunter-gatherer ancestors. Organic exercise is generally preformed in natural or outdoor settings. 1.Organic exercise may include such activities as walking, jogging, swimming, hiking or rock climbing.
When it comes to organic exercise, one of its most significant benefits is its limited reliance on equipment. 2.Going for a jog, walking, or even hiking does not require tools, weights, or even hiking does not require tools, weights, or other products, and therefore, is fairly inexpensive.
Since the types of activity emphasized in organic exercise programs are similar to those performed as part of daily life, they do not require extensive or long amounts of practice to obtain proficiency(精通). 3.Therefore the type of activity recommended in an organic workout routine can be performed by beginning or advanced exercisers alike with relative ease.
While the type of exercise recommended in an organic workout may be easy enough to perform, the intensity at which it is recommended can be too much for some individuals. 4.Individuals who are new to exercise or suffer from a chronic health condition that limits their physical ability may find it difficult to perform exercise that is especially strenuous.
5.Individuals who are new to exercise may want to talk with their health care provider before choosing this type of activity. In some cases, it may be better to start off with a more traditional workout and slowly transition to organic exercise than starting with this regimen(养生法)right off the bat.
A. Weigh both the benefits and drawbacks.
B. In fact, it can be done nearly anywhere, any time.
C. Therefore it requires very little helping equipment.
D. Choosing the right types of organic exercise is important.
E. Most adults already know how to hike, swim or dig, for example.
F. In fact, one of the biggest drawbacks is the emphasis on high-intensity exercise.
G. While organic exercise may be a good choice for some, it is right for all adults.
高三英语七选五中等难度题查看答案及解析
Oil is essential for modern life. About 64 percent of the world’s oil is located in the Middle East, but the heaviest consumers of oil are Europe, America, and Japan. The problem lies in getting the oil from the countries that produce it to the countries that consume it. This is mainly done using oil tankers. Usually the oil is shipped safely and with no problems, but occasionally there is a disaster.
Every year millions of tons of oil are spilled into the ocean. Although this is only a small percentage of the total amount shipped around the world each year, this spilled oil can have terrible effects on ocean life, including the coastlines where the oil washes up onto shore.
One of the worst oil spills in history occurred along the Alaskan coastline in 1989, when the Exxon Valdez tanker got stuck off the coast of Alaska, spilling 42 million liters of oil. Although it wasn’t the largest oil spill, the disaster was terrible because it occurred in such a sensitive natural area. In this spill, the tanker’s captain, who was tired from overwork and drinking alcohol, had gone to take a rest. He gave control of the ship to another sailor, who was unfamiliar with the route. The ship ran onto Bligh Reef. Damaged by the reef, the ship leaked oil out into the ocean. More than 1,600 kilometers of coastline were affected by the oil spill. Many birds and otters died as a result of the oil covering their skin, and many other sea creatures and the animals that fed on them were also severely affected.
1.Which country is NOT among the largest consumers of oil?
A. Japan B. Iraq
C. America D. Germany
2.What does the underlined “them” refer to?
A. The birds. B. The otters.
C. The sea creatures. D. The birds and the otters.
3.Which of the following statement is true?
A. The oil leak of Alaska is because the captain was unfamiliar with the route.
B. Many birds and otters died from eating the spilled oil.
C. Alaska spill was the most serious spill of all time.
D. Although some oil leak is not serious, it will affect ocean life.
高三英语阅读理解简单题查看答案及解析
Asking for feedback (反馈)is an essential step in your design process regardless of whether your work is finished or not. 1. You may do this in team meetings. You may do this after a person stares at your works for two hours, or after you post what you’ve just created. But in your effort to improve, it’s vital to understand the characteristics that separate three types of feedback.
Reaction-based feedback tends to be casual and emotional. For example, “That’s wonderful!” Feedback of this type is driven by what a person thinks he is expected to say or what the designer wants to hear. 2. This kind of reaction has little to do with what is being presented.
3. For example, “You should include a wider range of colors and make them match.” That’s also where such feedback ends. In this form of feedback, the individual providing it is often looking for ways to bring the creation more in line with his own expectations for designs.
When you are designing something, you need to have a specific purpose. When looking for feedback, you are working to understand whether your creation appropriately meets the purpose.
4. And that’s exactly what is offered by a critique （批判性反馈）,the third kind of feedback. For example, “If the purpose is to attract kids, it is fantastic to have a colorful castle-like building. Don’t use dark cloth, and avoid large furniture.” Comment of this type helps you tell if your work has achieved the desired outcome. 5.
A.But feedback differs greatly in its usefulness.
B.Direction-based feedback begins with a suggestion.
C.Sometime you need to turn to others for their comments.
D.It’s this form of feedback that is most helpful to your design.
E.You are looking for critical analysis for strengths or weaknesses.
F.Like emotional feedback, this next kind of feedback offers no explanation.
G.It is a response to the social demands of the situation rather than the needs of the designer.
高三英语七选五简单题查看答案及解析
Sleep, considered a luxury by many, is essential for a person’s wellbeing. Researchers have found that insufficient sleep increases a person’s risk of developing severe medical conditions. such as obesity, diabetes, and cardiovascular diseases. Now, a new study by Boston’s Massachusetts Institute of Technology ( MIT) has found that getting sufficient sleep is also the key to improving academic performance.
Jeffrey Grossman, who led the research. was not trying to find the link between sleep and grades when he handed out Fitbits to the 100 students in his introduction to Solid-State Chemistry class. Instead, the professor of Computational Materials Science hoped the popular wrist-worn device which. tracks a person’s activity 24/7, would show a connection between physical exercise and academic achievement.
However, the study, published in the journal “Science Learning” on October 1, 2019, discovered a surprising insight. Then was a straight-line relationship between the average amount of sleep a student got and his/her grade on the 11 quizzes, three midterms, and the final exam administered during the semester.
Even more interesting, it was also not sufficient for students to just head to bed early the night before a test. Instead, it’s the sleep you get during the days when learning is happening that matters most.
The time students went to bed each night was similarly important. Those who went to bed in the early hours of the morning performed poorly, even if the total sleep time was the same as a higher - performing student. “When you go to bed matters. Grossman says. If you go to bed after 2, your performance starts to go down even if you get the same seven hours. So, quantity isn’t everything.”
1.What is the new finding about sleep?
A.It's essential for a person’s health. B.Sleeping less may cause obesity.
C.Sleeping too much is dangerous. D.Ample sleep leads to better grades.
2.What does the underlined word “Fitbits” in paragraph 2 refer to?
A.Wearable devices. B.Questionnaires.
C.Fitness equipment. D.Smartphones.
3.Which of the following best describes the final result the new study?
A.Doubtful. B.Predictable.
C.Disappointing. D.Unexpected.
4.What will benefit students’ study according to Grossman?
A.Sleeping for 5 hours each day. B.Heading to bed at 3 a.m every day.
C.Getting enough sleep while learning. D.Going to bed early only before a test.
高三英语阅读理解中等难度题查看答案及解析
Sleep, considered a luxury by many, is essential for a person's wellbeing. Researchers have found that insufficient sleep and tiredness increase a person's risk of developing severe medical conditions, such as obesity (being very overweight), high blood sugar levels, and heart disease. Now, a new study has found that getting sufficient sleep is also the key to improving academic performance.
Jeffrey Gross, the university science professor who led the research, was not trying to find the relationship between sleep and grades when he handed out smart watches to the 100 students in his chemistry class. Instead, the professor hoped the wrist-worm devices, which track a person's physical activity, would show a connection between exercise and academic achievement.
While Gross's data showed no relationship between these two factors, the study found something surprising. As the researchers were analyzing their data, they noticed that there was a straight-line relationship between the average amount of sleep a student got and their results in the course's 11 quizzes, three midterm tests, and the final exam.
Even more interesting, it was not sufficient for students to just head to bed early the night before a test. Instead, it's the sleep you get during the days when learning is happening that matters most.
The time students went to bed each night was similarly important. Those who went to bed in early hours of the morning performed poorly, even if the total sleep time was the same as a higher-performing student. "When you go to bed matters," Gross says, "If you go to bed at 10, or 12, or 1 at night, and sleep for seven hours, your performance is the same. But if you go to bed after 2, your performance starts to go down even if you get the same seven hours. So, quantity isn't everything."
Perhaps the most interesting was the huge impact that small differences in sleep patterns had on the students' grades. The overall course grades for students averaging six and a half hours of sleep each night were 25% lower than students who averaged just one hour more sleep. Similarly, students who varied their bedtime by even one hour each night had grades that dropped 45% below those with more regular bedtimes.
Who knew getting A's just required some extra ZZZ's?
1.Based on his original objectives, which best describes Professor Gross's research findings?
A.Accidental. B.Complete. C.Convincing. D.Doubtful.
2.Who were the people taking part in the study?
A.Middle school chemistry students. B.Volunteers from different universities.
C.Professor Gross's own students. D.University student athletes.
3.How did Professor Gross's team measure academic performance?
A.Making the students wear a special watch.
B.Using students' university entrance test results.
C.Giving the students regular after class quizzes.
D.Using the students' normal test and quiz grades.
4.Based on the study's findings, who is likely to perform best academically.
A.A person who has a good night's sleep the night before an important test.
B.A person whose normal bedtime varies between 9 p.m. and 12 p.m.
C.A person who sleeps from 11 p.m. to 6 a.m. each day.
D.A person who sleeps for a total of 7 hours each night.
高三英语阅读理解中等难度题查看答案及解析
A polished resume is essential for a successful school or job application. A clear structure and well organized content can be the difference between success and failure.
Structuring your resume
(1) Create a header with your name and contact information. At the top of the page、type your full name, address, phone number and email address. There are also down loadable templates(模板)available online. If none of them appeals to you. however, you can always use your own design,
(2) Use a chronological(时间顺序排列的)resume. In a chronological resume, you list your work and education experiences, starting with your most recent experience.
(3) Include your relevant education, awards or training. Typically, your highest academic qualification is the only one you need to include on your resume. However, you can add lesser achievements if they are relevant to a job's requirements.
If you had a cumulative(累积的)GPA of 3.5 or higher, feel free to include it. Otherwise, it would be best to leave it out. If you’re listing more than one degree, include your GPA on both of them, if possible.
(4) List work experience, including relevant volunteer work and internships. Use specific job titles and short explanations that tell potential employers exactly what you did, what skills you gained and how they could be useful in a new job.
(5) Try a functional resume, if you lack direct work experience. With a functional resume you can highlight your specific skills and resources without having to list previous jobs. A functional resume emphasizes what you can do rather than what you've done.
Making your content shine
(1) Place keywords in your resume strategically. Schools or employers often use software to scan resumes for specific keywords.
(2) Add hobbies and interests, if they relate to the job. A section for hobbies and interests is usually considered optional. However, you should include only hobbies or interests that would benefit an employer. For example, if the job requires good teamwork, you can say that you were captain of your high school basketball team.
(3) Proofread before sending your resume. Don't only rely on the grammar and spelling checkers built into your word processing app. Read through your resume several times to make sure it's error-free.
(4) Save your resume as a PDF file. Most schools and employers prefer to use PDFS for online safety reasons. So don't forget to convert your document before you send it
1.How should you present your job and education experiences on a resume?
A.Begin with your most successful experience.
B.Start with your most recent experience.
C.Include as many details as possible.
D.Only introduce your highest degree.
2.When should you leave your GPA out of your resume?
A.If your total GPA was below 3.5.
B.If your cumulative GPA was below 4.0.
C.If you're listing more than one degree.
D.If you are still a student.
3.What should you do if you don't have much work experience according to the text?
A.List every job you've done before.
B.Talk about how much you know about the job.
C.Focus on your abilities and skills related to the job.
D.Share what you've learned from your previous work.
4.How can you make your resume noticeable according to the text?
A.Use a catchy template.
B.Send your resume in a DOC file.
C.Mention a hobby that you are good at.
D.Highlight some keywords in your resume.
5.What is the main idea of this passage?
A.The recipe of resume success.
B.How to structure your resume.
C.The ways to shine the content of your resume.
D.The contact information in the resume.
高三英语阅读理解中等难度题查看答案及解析
Thank You Notes: The Essential Life Lessons
There is no greater gift for any of us to give our friends and family than the gift of gratitude.1.Take a quiet moment to think about the blessings of the season and write a thank you note to everyone who made it special for you. There are some life lessons from thank you notes.
2.Even a child can make some lines on paper, help pick out a pretty stamp, and lick the envelope. This helps create a sense of ownership, confidence, and contribution. Thank you notes strengthen communication skills. Wherever you are, no skill matters more than the ability to communicate clearly and sincerely mid thoughtfully. 3.Those are the qualities that inspire people to trust and respect you.
Thank you notes remind you about what matters. Maybe the gift was thoughtless. But when we write a thank you note we have to locate within ourselves some way to be grateful and find some way to express it. We do not find happiness in what we get. 4.Not,“Thank you for the sweater. It is cool.” but “Thanks for the sweater!” Not, “Thanks for the game,” but “We had a blast playing that game.”
I think you will soon discover that the more thank you notes you send, the more you become aware of how much there is to be grateful for, and how good it feels to let people know you appreciate them.
A. Everyone can write a thank you note.
B. And that can begin with thank you notes.
C. Thank you notes must have specific details.
D. There is no other wart to convey this message.
E. You can even write to people you do not know.
F. We find happiness in being grateful for what we have.
G. It conveys maturity, reliability, confidence and thoughtfulness.
高三英语七选五中等难度题查看答案及解析