Race walking shares many fitness benefits with running, research shows, while most likely contributing to fewer injuries. It does, however, have its own problem.
Race walkers are conditioned athletes. The longest track and field event at the Summer Olympics is the 50-kilometer race walk, which is about five miles longer than the marathon. But the sport’s rules require that a race walker’s knees stay straight through most of the leg swing and one foot remain in contact (接触) with the ground at all times. It’s this strange form that makes race walking such an attractive activity, however, says Jaclyn Norberg, an assistant professor of exercise science at Salem State University in Salem, Mass.
Like running, race walking is physically demanding, she says, According to most calculations, race walkers moving at a pace of six miles per hour would burn about 800 calories(卡路里) per hour, which is approximately twice as many as they would burn walking, although fewer than running, which would probably burn about 1,000 or more calories per hour.
However, race walking does not pound the body as much as running does, Dr. Norberg says. According to her research, runners hit the ground with as much as four times their body weight per step, while race walkers, who do not leave the ground, create only about 1.4 times their body weight with each step.
As a result, she says, some of the injuries associated with running, such as runner’s knee, are uncommon among race walkers. But the sport’s strange form does place considerable stress on the ankles and hips, so people with a history of such injuries might want to be cautious in adopting the sport. In fact, anyone wishing to try race walking should probably first consult a coach or experienced racer to learn proper technique, she says. It takes some practice.
1.Why are race walkers conditioned athletes?
A.They must run long distances.
B.They are qualified for the marathon.
C.They have to follow special rules.
D.They are good at swinging their legs.
2.What advantage does race walking have over running?
A.It’s more popular at the Olympics.
B.It’s less challenging physically.
C.It’s more effective in body building.
D.It’s less likely to cause knee injuries.
3.What is Dr. Norberg’s suggestion for someone trying race walking?
A.Getting experts’ opinions.
B.Having a medical checkup.
C.Hiring an experienced coach.
D.Doing regular exercises.
4.Which word best describes the author’s attitude to race walking?
A.Skeptical. B.Objective.
C.Tolerant. D.Conservative.
高三英语阅读理解困难题
Race walking shares many fitness benefits with running, research shows, while most likely contributing to fewer injuries. It does, however, have its own problem.
Race walkers are conditioned athletes. The longest track and field event at the Summer Olympics is the 50-kilometer race walk, which is about five miles longer than the marathon. But the sport’s rules require that a race walker’s knees stay straight through most of the leg swing and one foot remain in contact (接触) with the ground at all times. It’s this strange form that makes race walking such an attractive activity, however, says Jaclyn Norberg, an assistant professor of exercise science at Salem State University in Salem, Mass.
Like running, race walking is physically demanding, she says, According to most calculations, race walkers moving at a pace of six miles per hour would burn about 800 calories(卡路里) per hour, which is approximately twice as many as they would burn walking, although fewer than running, which would probably burn about 1,000 or more calories per hour.
However, race walking does not pound the body as much as running does, Dr. Norberg says. According to her research, runners hit the ground with as much as four times their body weight per step, while race walkers, who do not leave the ground, create only about 1.4 times their body weight with each step.
As a result, she says, some of the injuries associated with running, such as runner’s knee, are uncommon among race walkers. But the sport’s strange form does place considerable stress on the ankles and hips, so people with a history of such injuries might want to be cautious in adopting the sport. In fact, anyone wishing to try race walking should probably first consult a coach or experienced racer to learn proper technique, she says. It takes some practice.
1.Why are race walkers conditioned athletes?
A.They must run long distances.
B.They are qualified for the marathon.
C.They have to follow special rules.
D.They are good at swinging their legs.
2.What advantage does race walking have over running?
A.It’s more popular at the Olympics.
B.It’s less challenging physically.
C.It’s more effective in body building.
D.It’s less likely to cause knee injuries.
3.What is Dr. Norberg’s suggestion for someone trying race walking?
A.Getting experts’ opinions.
B.Having a medical checkup.
C.Hiring an experienced coach.
D.Doing regular exercises.
4.Which word best describes the author’s attitude to race walking?
A.Skeptical. B.Objective.
C.Tolerant. D.Conservative.
高三英语阅读理解困难题查看答案及解析
Many universities share teaching resources online, creating a learning space ________ benefits life-long learners.
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
Walking and running are the oldest and newest, excellent _________ exercise for all ages and fitness levels.
A.bodies shaping | B.body shaping | C.bodies shaped | D.body's shape |
高三英语单项填空中等难度题查看答案及解析
— I am bored with running.
— Why not try trampoline, a new fitness craze that ______ the world by storm?
A.took B.is taking C.had taken D.will take
高三英语单项填空简单题查看答案及解析
How to Deal With Travel Anxiety Abroad
Traveling abroad offers many benefits. But for those suffering from anxiety, travelling in a new country they know little about can be challenging. 1.
Take a notebook. A notebook is the perfect choice to keep your trip organized! It can be used to detail the itinerary (行程) and map important locations.2.For example, whenever you feel bored, you can find a quiet place to sit and draw as you like.
3. The biggest travelling fears can be getting lost, losing smartphones or having passports stolen. So to deal with such nerves, think of possible ways in advance for all the situations before travelling.
Socialize with strangers. 4. But when you’re traveling, you have to talk with others.
You’ll find plenty of people willing to recommend new places or share their experiences.
Be proud of how far you’ve come. Things are not always going as you like. There is nothing better than some positive words to make yourself calm and confident that things will get better and you’re doing the right thing. 5. Don’t ruin all the progress you’ve been making.
All in all, anxiety can strike anytime. Positive thoughts and preparedness can help you go on and get lost in a new culture — you’ll be glad you did!
A. It is also important to record details.
B. Try to keep your emotions in control.
C. It can bring some other benefits as well.
D. You may be a person with social anxiety.
E. Create plans for some issues ahead of time.
F. Fortunately, there are ways of managing this fear.
G. These tips will change your opinion about travelling.
高三英语阅读理解中等难度题查看答案及解析
Although honey is a natural food with many health benefits, you should avoid giving it to your child until they are a year old. This is because there’s a small chance that it could contain a bacterium (细菌), which can result in infant botulism (婴儿型肉毒中毒): a serious form of food poisoning.
Unfortunately, it’s not possible for manufacturers to destroy the bacteria without cooking the honey, which makes the sweet matter unsuitable for babies under one. Although the British Honey Importers and Packers Association advises its members to print on honey labels that it’s not suitable for babies under 12 months, all products will not carry the warning. So it’s up to you to remember not to add honey to your baby’s food.
Although you may feel your baby’s food could do with a spoonful of honey for sweetness, it’s a good idea to avoid giving her too many sugary tastes. Offering too many sweet foods could mean that your baby develops a sweet tooth.
If, however, adding sweetness to certain foods will help. There are plenty of alternatives to honey. Try low-sugar jams on fingers of toast or in sandwiches. You can also sweeten the flavor of sharp or sour fruit such as rhubarb (大黄) by adding jams like apples or pears.
Once your baby is over a year old, it’s safe to introduce honey. By this time, a child’s intestines (肠) have grown enough to process the dangerous bacteria without allowing it to grow. However, because honey is a type of sugar, nutritionists still advise you should limit the amount to avoid problems as to tooth later on.
1.Why should we avoid giving honey to a baby?
A. Because too much honey will ruin the baby’s teeth.
B. Because a bacterium can cause food poisoning.
C. Because honey can make babies lack appetite.
D. Because honey will lead t0 infant depression.
2.From the second paragraph we can infer that .
A. honey manufacturers will remove the bacteria by cooking
B. every honey product will carry a label in the market
C. some products will carry a label while in the market
D. parents can accuse manufacturers of their products
3.The underlined sentence in the passage means that .
A. we have no choice except honey
B. we have many choices apart from honey
C. we can choose honey and other things
D. we can’t choose honey or other things
4.Which of the following is the best title for the passage?
A. Why Is Honey Dangerous for Your Baby?
B. When Can You Feed Your Baby with Honey?
C. How Does Honey Benefit Your Baby?
D. What Can You Do with Honey for Your Baby?
高三英语阅读理解中等难度题查看答案及解析
With drink and food _________ , the farmer had to walk out of the cave.
A.run out | B.use up | C.run out of | D.using up |
高三英语单项填空简单题查看答案及解析
Jane had many new friends in the school, ______ she shared her feelings.
A.with whom B.with which C.to whom D.for which
高三英语单项填空困难题查看答案及解析
For many, holiday celebrations mean large meals shared with family and friends, but such feasts can generate huge amounts of food waste, harming the environment and overusing natural resources—unless mindful merrymakers take steps to control the amount. 1.
Be mindful of what you already have
Try keeping food in glass jars. Using this method, you can make all the food in your kitchen visible, easily remembered and consumed. 2.. Nothing gets lost in the back of a shelf.
3.
Stick to a planned holiday menu before heading to the grocery store. A clear idea of who will be gathered and exactly how much food to prepare will save a lot of tossing out later. Be mindful not just of how much to purchase, but the items themselves.
Use leftovers wisely
It may be impossible to get everyone into the clean plate club. 4. Freeze and repurpose leftovers by using them as basic ingredients for other recipes or send extras home with guests.
Keep track of the scraps(残羹)
Along with turkey bones, use holiday scraps such as vegetables, meat and fish bones to make soup. For pet-safe dishes, allow your dog to clean plates before putting them in the dishwasher.
Consider composting(堆肥)
5. . These materials can be composted, which will keep them out of landfills, where they take up space and release methane, a potent greenhouse gas.
A.Shop smart
B.Plan a menu
C.That doesn't mean leftover food has to go waste
D.Some of your family or guests may not like the food
E.Following are some tips on reducing food waste during holidays
F.Organize your dry food on one row and use refrigerator drawers
G.Food scraps and yard waste make up more than 28 percent of waste
高三英语七选五中等难度题查看答案及解析
A. A soccer game. B. A bicycle race.
C. A swimming game. D. A Marathon running race.
高三英语短对话简单题查看答案及解析