题目内容
diseases. As a result, vitamin supplements (补品), though expensive, are popular with people who
worry that they are not getting enough vitamins from the foods they eat. But contrary to what many
people think, medical experts have found little evidence that most supplements do anything to improve
health or protect against disease.
In fact, medical experts warn that taking too many of some vitamins can be harmful. For example,
too much vitamin E can cause bleeding. People should discuss what vitamins they take with their
doctors, as some vitamins can produce harmful side effects when mixed with medicines.
Experts, however, do say that sometimes vitamins can help prevent disease. People who know they
lack a particular vitamin should take vitamin supplements. Some older adults, for example, may not have
enough vitamin B-twelve. This is because, as people get older, their body loses its ability to take it from
foods. Also, people who spend much time inside may need some extra vitamin D as the skin makes this
vitamin from sunlight.
Different vitamins are found in different foods. Vitamin A is found in fish liver oil. It also is in the
yellow part of eggs. Sweet potatoes, carrots and other darkly colored fruits and vegetables contain
substances that the body can change into vitamin A. Vitamin B-twelve is found in green leafy vegetables
and other foods, like fruits. Vitamin K can be found in pork products.
In fact, for most people, a balanced diet can ensure enough of the vitamins our bodies need. So, it is
important for us to eat a mixture of foods every day to ensure that we get enough vitamins our bodies
need.
B. How many vitamins some foods contain.
C. The benefits that vitamins bring to our health.
D. What people should do to stay healthy.
B. they contain more vitamins than the foods people eat
C. food does not provide enough vitamins people need
D. people fear that a lack of vitamins will lead to disease
B. to depend only on food for their vitamins
C. not to take any vitamins together with medicines
D. to consult doctors before taking vitamin supplements
B. green leafy vegetables
C. pork products
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Write NO MORE THAN THREE WORDS for each answer. With an obese (very fat) or overweight population of 66% percent of adults, teaching your kids healthy eating habits is one of the most important things you can do for them as a parent. Most parents and children claim that breakfast is part of their everyday routines. But for many more than you might think, it's not. Children who eat breakfast have higher math grades, have improved reading scores and basically perform better in school. They also tend to have healthier bodies in general, with better-controlled weight levels. When you take them to the grocery store with you, it's doubtless that your children will request the most sugar-filled, fat-injected products on the shelf. But these are not the ones to have in your home-you should avoid buying them at all. Be sure your kids have healthy snacks. Yes, kids like white bread. But any kid can get used to the taste of whole grains. It just takes a little practice. Look for white bread, and add other whole grains into their diet. Start toasting their sandwiches. When it's toasted, it'll be that much harder for them to tell the difference in taste. It's simple, it's true, and it's something you already know: kids who get plenty of exercise are healthier kids. Set limits on the amount of time your child may spend in front of the television or computer screen. Sign them up for plenty of sports and outdoor activities. And best of all, get involved in sports and exercise with them. One of the best things you can do to establish healthy eating habits in your kids is to have them yourself. You can tell your kids every day to eat healthy foods, but if you don't do the same thing yourself, the lesson will never stick.
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Write NO MORE THAN THREE WORDS for each answer. Tomatoes are the world's most popular fruit rich in nutrition like Vitamin A, C, fibre and lycopene (番茄红素). Researchers have found that consuming lycopene helps in preventing cancer. Tomato also helps in keeping the skin healthy and young by protecting from harmful rays. Since lycopene is present in the cellular wall of tomato, it is better to consume cooked tomato to have higher concentration of lycopene. So tomatoes are a wonderful fruit. Then how to grow tomatoes? First, there should be regular and even watering in the fields where tomatoes grow. You can also add fertilizer to have better results. Plant the tomato plants with enough space(for example 2 to 3 inch space)between each other to lessen spreading of disease and pests and help the fruits get enough sunlight. Provide support like pole when the plants grow up to prevent from disease and to increase the crop product. In order to make your tomatoes grow well, you should take some useful tips. For example, choose variety based on the season and soil type that you are growing. Planting site should have enough sunlight to have more fruits. Prune(修剪)the tomato plants if necessary to maintain a manageable size. Check tomato plants regularly for any kind of pests and diseases. To people's regret, tomatoes possibly suffer from some diseases during their growth. So you must try your best to prevent them. Soil should be free from debris(残骸)of earlier plant remains and should be treated first before tomato plantation like solarizing(晒) to prevent from pests. It is always better to choose resistant plant varieties and follow crop rotation(轮作)as far as possible.
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B. collect
C. get rid of
D. place in suitable positions
B. six buildings are heated by the heat system on the Johnstown campus
C. the heat is supplied by human bodies, other heat-omitting objects
D. the heat from human bodies, other heat-omitting objects is only used in cold winter
B. a thin male who studies hard
C. a thin female who does not study hard
D. a large male who studies hard
B. objective
C. serious
D. humorous