Apples are packed with amazing health benefits: weight loss, heart protection, lowering your risk of illnesses, and many more. Not only are they good for you, but they taste delicious too! The only problem is that the pieces we pack for lunch are always an unpleasant brown by the time we dig them out of the fridge. That’s because polyphenol oxidase (PPO) in the fruit experiences a chemical change with oxygen (氧气) in the air.
Luckily, there is an apple you can pick up at the store that won’t turn brown for a while―the Opal apple. Opal apples are naturally low in PPO, which means they’ll stay fresh and white long after you cut them. It has been tested that after sitting out unpacked for more than six hours, the apple had hardly any browning.
You may be wondering if genetic modification (转基因) plays a role in avoiding the fruit’s browning. In fact, you may even ask if Opal apples are safe to eat because they can do something most apples can’t. But according to the Opal website, they’re the first apples to be checked by the Non-GMO Project, the gold standard for certification (证明). “We understand that some people are concerned about genetically modified organism (GMO) products and felt it was important to make it clear that the natural nonbrowning characteristic is just that―natural,” said Keith Mathews, CEO of First Fruits Marketing.
The Opal apple is actually a cross between a Golden Delicious and a Topaz apple, and it has a sweet flavor. Plus, it still has all the health benefits every other apple has. Although FirstFruits Marketing does not show nutrition (营养) facts for the Opal apples, their nutrition value should be similar, if not the same, to every other apple. If you don’t like eating brown apples, you can consider going to the supermarket for some Opal apples.
1.How is the Opal apple different from other apples?
A.It has less PPO.
B.It helps lose weight.
C.It has the attractive smell.
D.It has few spots on its skin.
2.Why is the Non-GMO Project mentioned?
A.To show the popularity of Opal apples.
B.To show Opal apples meet the safety standard.
C.To show Opal apples have a special characteristic.
D.To show the concern for GMO foods.
3.What is the author’s attitude to the Opal apple?
A.Doubtful. B.Uncaring. C.Positive. D.Careful.
4.What is the best title of the text?
A.Opal Apples―with More Nutrition?
B.Opal Apples―on the Way to Be Popular?
C.Opal Apples―A New GMO Food?
D.Opal Apples Never Brown―But Are They Safe to Eat?
高一英语阅读选择简单题
Losing weight comes with a lot of health benefits — including making your brain sharper.
Yes, it turns out that overweight may damage cognitive (认知的) functions such as memory and attention. There have been few studies of overweight and cognitive functioning, possibly because it is generally believed that it is not a primary risk cause for poor cognitive performance. Losing weight, therefore, may help improve these mental functions, according to a new research led by John Gunstad, assistant professor of psychology (心理学) at Kent State University.
Growing evidence suggests that being fat is linked to cognitive deficits (缺陷). So Gunstad and his team guessed that losing weight might improve mental function. For their study, they measured memory and attention in a group of 150 overweight participants, some of whom had some kind of operation for weight loss and some did not. All of the volunteers completed mental skills tests to assess their abilities of memory and attention at the beginning of the study, and again 12 weeks later. To begin with, about 24% of the patients showed damaged learning and 23％showed signs of poor memory when tested. At the end of the study, those who had lost weight after operation improved their scores into the average or above average range for cognitive functions. Scores for the volunteers who didn’t lose weight dropped even further.
The study helped Gunstad to find out whether losing weight had any effect on mental function. Now that he’s seen the positive effect that weight loss can have on memory and attention, he says he will next study those who choose to lose weight by the traditional way — eating healthier and getting more active. He expects that losing weight in this way will have a similarly positive effect on the brain. “If we can improve the condition with operations, then we can probably produce the same change with behavioral weight loss as well,’’ he says.
1.The result of Gunstad’s study shows that ___________.
A.losing weight has little effect on people’s memory
B.losing weight can improve people’s mental functions
C.overweight people are likely to have psychology problems
D.overweight people’s abilities of concentration differ greatly
2.What is Gunstad planning to prove next in his research?
A.Slim people are smarter than overweight people.
B.Healthy diet is better than exercise in losing weight.
C.Traditional ways of losing weight are better than operation.
D.Overweight people will get smarter by the traditional way.
3.Which of the following is the best title for the text?
A.Body Weight and Health B.Losing Weight by Operation
C.Ways to Improve Mental Functions D.Losing Weight to Sharpen Your Mind
高一英语阅读理解中等难度题查看答案及解析
Losing weight comes with a lot of health benefits—including making your brain sharper.
There have been few studies of overweight and cognitive functioning, (认知功能) possibly because it is generally believed that it is not a primary risk cause for poor cognitive performance. Yet, it turns out that overweight may damage cognitive functions such as memory and attention. Losing weight, therefore, may help improve these mental functions, according to a new research led by John Gunstad, assistant professor of psychology at Kent State University.
Growing evidence suggests that being fat is linked to cognitive deficits (缺陷). So Gunstad and his team guessed that losing weight might improve mental function. For their study, they measured memory and attention in a group of 150 overweight participants, some of whom had some kind of operation for weight loss and some did not. All of the volunteers completed mental skills tests to assess their abilities of memory and attention at the beginning of the study, and again 12 weeks later. To begin with, about 24% of the patients showed damaged learning and 23% showed signs of poor memory when tested. At the end of the study, those who had lost weight after operation improved their scores into the average or above average range for cognitive functions. Scores for the volunteers who didn’t lose weight dropped even further.
The study helped Gunstad to find out whether losing weight had any effect on mental function. Now that he’s seen the positive effect that weight loss can have on memory and attention, he says he will next study those who choose to lose weight by the traditional way—eating healthier and getting more active. He expects that losing weight in this way will have a similarly positive effect on the brain. “If we can improve the condition with operations, then we can probably produce the same change with behavioral weight loss as well,” he says.
1.There is less research on overweight and cognitive functions because researchers _____.
A. believe overweight only affects our body
B. have focused on ways to sharpen people’s mind
C. do not consider overweight a main cause for low cognitive ability
D. are clear about the relation between weight and mental functions
2.The result of Gunstad’s study shows that ______.
A. losing weight has little effect on people’s memory
B. losing weight can improve people’s mental functions
C. overweight people are likely to have psychology problems
D. overweight people’s abilities of concentration differ greatly
3.What is Gunstad planning to prove next in his research?
A. Overweight people will get smarter by taking more exercise.
B. Healthy diet is better than exercise in losing weight.
C. Traditional ways of losing weight are better than operation.
D. Slim people are smarter than overweight people.
4.Which of the following is the best title for the text?
A. Body Weight and Health
B. Losing Weight by Operation
C. Ways to Improve Mental Functions
D. Losing Weight to Sharpen Your Mind
高一英语阅读理解中等难度题查看答案及解析
Traffic jams loss of time – and loss of health, according to a recent research.
A. benefit from B. keep away C. make up D. result in
高一英语单项填空中等难度题查看答案及解析
Those who do exercise _____ in our club have showed amazing improvements in health and weight.
A．timely B．gradually C．regularly D．entirely
高一英语单项填空中等难度题查看答案及解析
Weight loss(减肥) is a hard topic. Lots of people aren’t satisfied with their present weight, but most people aren’t sure how to change it. You may want to look like the models（模特） or actors in magazines or on TV, but those goals might not be healthy or realistic(现实的) for you . 1.
So what should you do about your weight control?
2.The best way to find out if you are at a healthy weight or if you need to lose or gain weight is to talk to a doctor or dietitian（营养学家).3. If it turns out that you can benefit from （从..获益）weight loss then you can follow a few of the simple suggestions listed below to get started.
4. People who lose weight quickly by crash dieting （速效节食）or other extreme measures（极端方法）usually gain back all of the pounds they lost, because they haven’t permanently(永久地) changed their habits. Therefore, the best weight management ways are those that you can maintain（保持） for a lifetime.
Small changes are a lot easier to stick with(坚持做) than large ones. Try reducing the size of what you eat. 5. Once you have that down, start gradually introducing healthier foods and exercise into your life.
It’s a good idea to maintain a healthy weight because it’s just that: healthy.
A．Try giving up regular soda for a week.
B．Try to pay attention as you eat and stop when you’re full.
C．Weight management（体重管理） is about long-term success.
D．Besides, no magical （神奇的）diet will make you look like someone else.
E．Being healthy is really about being at a weight that is right for you.
F．Changing from whole to nonfat or low-fat milk is also a good idea.
G．They will compare your weight with healthy standards（标准） and help you set goals.
高一英语七选五困难题查看答案及解析
Weight loss is a hard topic.Lots of people aren't satisfied with their present weight,but most people aren't sure how to change it.You may want to look like the models or actors in magazines or on TV,but those goals might not be healthy or realistic for you.1.
So what should you do about your weight control?
2.The best way to find out if you are at a healthy weight or if you need to lose or gain weight is to talk to a doctor or dietitian.3.If it turns out that you can benefit from weight loss then you can follow a few of the simple suggestions listed below to get started.
4.People who lose weight quickly by crash（速成的）dieting or other extreme measures usually gain back all of the pounds they lost,because they haven't permanently（永久地）changed their habits.Therefore,the best weight management ways are those that you can maintain for a lifetime.
Small changes are a lot easier to keep than large ones.Try reducing the amount of what you eat.Try cutting down the fat in your daily meals.5..Once you have kept that down,start gradually introducing healthier foods and exercise into your life.
It's a good idea to maintain a healthy weight because health is most valuable to us all.
A.Weight management is about long-term success.
B.Besides,no magical method will make you look like someone else.
C.Try giving up junk food for a week.
D.Choose different kinds of food to eat so as to keep healthy.
E.Changing from whole to nonfat or low-fat milk is also a good idea.
F.Being healthy is really about being at a weight that is right for you.
G.They will compare your weight with healthy standards and help you set goals.
高一英语七选五中等难度题查看答案及解析
Some weightloss camps, which are rare in China just a few years ago，have multiplied in Beijing, Qingdao, Shenzhen，and other cities. Today about 15 percent of adults, or 200 million Chinese, are reportedly overweight.Of these, 90 million—about 7 percent—are obese(极肥胖的)．
Experts say the obesity epidemic(流行病) is spreading to children, though more slowly than in adults. The obesity, they say, will do harm to the health of China’ s citizens and economy.“We're seeing a very large number of teenagers who are quite heavy and aren't moving much，” said Barry Popkin, a nutrition(营养) professor. Popkin carries out an ongoing healthandnutrition survey of 16,000 households in China. He says more kids today are overeating and putting on weight “quite quickly.” In just ten years China‘s childhood obesity rate has doubled，with the greatest gains coming in urban areas.“In big cities it's a big problem.”
Some experts blame the extra fat on a range of factors, many of them tied to China’ s rapidly changing economy and culture. The diets of Chinese adults and children are far higher in meats, fish, eggs, dairy products, fats and sugars than ever before. In addition，kids—especially city dwellers—are more sedentary today and spend more time indoors in front of homework, television，computer games, and the Internet.
Shuwen Ng，a health economist, says that kids in China now have pocket money, and they spend a portion of it on junk food. Ng adds that advertising and peer groups influence kids' food choices. Certain foods, such as new candies or fast food, have attractive features.
China’ s childhood obesity rate still fall behind that of the United States, where some 15 percent of kids are said to be obese. But the longterm effects are equally serious.
1.According to the passage we know________.
A．weightloss camps have been very popular in China six years ago
B．about 290 million Chinese are overweight in China in all
C．in China childhood obesity rate in rural areas is lower than that in major cities
D．America’ s childhood obesity rate is lower than China’s
2.Which of the following reasons of China’s childhood obesity is NOT mentioned?
A．Advertising on some new candies.
B．ignorance of weight-control.
C．Playing computer games for long time.
D．Having pocket money.
3.The underlined word “sedentary” in the third paragraph probably means________.
A．confident B．patient C．energetic D．inactive
4.According to the passage we can infer________.
A．obesity explosion in China will affect the United States
B．there are great difference in kids' food choices now
C．junk food leads to childhood obesity
D．city children eat more than rural children
5.What's the best title for the passage?
A．Chinese Childhood Obesity problem
B．Weightloss Camps in China
C．Obesity problem's influence on Chinese Economy
D．Obesity problem in China and America
高一英语阅读理解中等难度题查看答案及解析
1.Hiking is _______ (benefit) to our health.
2.The house caught fire last night with nothing _____ (leave) in it.
3.The manager is considering ______ (hire) another secretary.
4.Put the dictionary on the desk for easy _______ (refer).
5.There are strong ______ (argue) for and against childhood vaccinations (疫苗).
6.I’d appreciate __ if you can inform me of what will happen in our company while I’m away.
7.WHO is short ______ the World Health Organization.
8.In most cases, hospital ______ (admit) is not necessary at all.
9.If a tyre blows out while one is driving ______ a high speed, it can be very dangerous.
10.It is clear that he didn’t take his family’s wishes ______ account when deciding to change jobs.
11.Some movies have been _________ (ban) on the basis of violence.
12.It is universally ________ (acknowledge) that a single man with a large fortune must be in want of a wife.
13.Mr. Smith can’t but walk home because his car broke _______ on his way back home.
14.An informer supplied the police _______ the names of those involved in the crime.
15.The boys were well-mannered and ________ (respect) of grown-ups.
高一英语用适当的词完成句子中等难度题查看答案及解析
It is said ______ vegetables and fruits are good to our health, apples and pears _________.
A．that, including B．what, including C．that, included D．what, included
高一英语单项填空困难题查看答案及解析
All cars made nowadays are________ with safety belts.
| A．prepared | B．packed | C．built in | D．equipped |
高一英语单项填空简单题查看答案及解析