Many scientists believe our love of sugar may actually be an addiction. When we eat or drink sugary foods, the sugar enters our blood and affects the parts of our brain that make us feel good. Then the good feeling goes away, leaving us wanting more. All tasty foods do this, but sugar has a particularly strong effect. In this way, it is in fact an addictive drug, one that doctors recommend we all cut down on.
“It seems like every time I study an illness and trace a path to the first cause, I find my way back to sugar, says scientist Richard Johnson. One-third of adults worldwide have high blood pressure, and up to 347 million have diabetes (糖尿病). Why? “Sugar, we believe, is one of the culprits, if not the major culprit,” says Johnson.
Our bodies are designed to survive on very little sugar. Early humans often had very little food, so our bodies learned to be very efficient in storing sugar as fat. In this way, we had energy stored for when there was no food. But today, most people have more than enough. So the very thing that once saved us may now be killing us.
So what is the solution? It's obvious that we need to eat less sugar. The trouble is, in today's world, it's extremely difficult to avoid. From breakfast cereals to after-dinner desserts, our foods are increasingly filled with it. Some manufacturers even use sugar to replace taste in foods that are advertised as low in fat. So while the foods appear to be healthier, large amounts of sugar are often added.
But some people are fighting back against sugar and trying to create a healthier environment. Many schools are replacing sugary desserts with healthier options, like fruit. Other schools are trying to encourage exercise by building facilities like walking tracks so students and others in community can exercise. The battle has not yet been lost.
1. What is the passage mainly about?A.Our addiction to sugar. |
B.Illnesses caused by sugar. |
C.Ways to avoid sugar. |
D.Why food suppliers add sugar. |
A.Disease. | B.Sweet food. |
C.A solution. | D.Cause of the problem. |
A.It gives us needed energy. |
B.It makes us energy efficient. |
C.We get used to eating it at school. |
D.It's in so many foods and drinks. |
A.Our bodies need to store much sugar as fat. |
B.We need very little sugar to survive. |
C.Early humans ate more sugar than we do today. |
D.Food suppliers are using fruit to replace sugar. |
相似题推荐
【推荐1】Though you might think you were taking care of your health by eating enough fruit and vegetables every day, new research has come out suggesting that you might be swallowing microplastic particles(微塑科颗粒)along with all those vitamins, minerals, and fibre. A study published in the journal Environmental Research has found that fruits and vegetables absorb microplastic particles from the soil and move them through vegetal tissues, where they remain until eaten by hungry diners, thus getting transferred to human bodies.
The researchers, who are from the University of Catania in Italy, analyzed a variety of common fruits and vegetables--carrots, lettuce, broccoli, potatoes, apples, and pears. These were chosen for the fact that they are frequently consumed, usually one per day, which allowed the researchers to better assess the dietary intakes of MPs(microplastic particles)and NPs(nano-plastics). The samples were purchased from different sources in the city of Catania, including a small fruit vendor and a supermarket.
The researchers found that apples, followed by pears, were the most polluted fruit samples, and carrots were the most polluted vegetable. In the study’s discussion section, the authors wrote, “We can assume that the fruits contain more MPs not only because of the very high vascularization(血资化)of the fruit pulp(果肉)but also due to the greater size and complexity of the root system and age of the tree(several years)compared to the vegetables(60-75 days for the carrot).”
This study is important because it’s the first to detect microplastics in fruits and vegetables. They have been found in other sources before, such as sea salt, beer, water(bottled, in particular), shellfish, sugar, soil, and even air, but never inside fresh produce. It’s an alarming discovery that raises yet another red flag about microplastic pollution in the natural environment.
It’s an area that will likely see a lot more attention in coming years, with the study authors calling for further research into the question of microplastic and whether it harms the health of both plants and humans.
1. What is the study about?A.The main cause of soil pollution. |
B.The great changes in people’s diets. |
C.The microplastic pollution in fruits and vegetables. |
D.The benefits of eating fruits and vegetables. |
A.The large amounts of the fruit pulp. | B.The planting method. |
C.The complex preservation method. | D.The long growth period of fruit trees. |
A.It discovered MPs in fresh produce for the first time. |
B.It proved the source of microplastic pollution. |
C.It presented the danger of MPs to human’s body. |
D.It showed the influences of MPs on plants. |
A.It has raised people’s awareness of health. |
B.It wasted them quite a lot of time. |
C.It needs to be further studied. |
D.It has attracted people’s attention to diets. |
【推荐2】Should You Hide Vegetables in Your Child’s Food?
Some kids are probably born naturally loving vegetables—but most kids don’t exactly like vegetables. And for many parents, getting kids to eat vegetables can be a struggle. There may be a place for hidden vegetables, but in general, it’s best to help kids learn to enjoy vegetables.
First, remember that it can take time.
Offering choice also invites your child to be active in their own food decision-making.
If gardening is an option,
A.Here’s why. |
B.This feeds kids’ desires for independence. |
C.this can also lead to interest in healthy produce. |
D.So how do you make your kid a vegetable lover? |
E.Similarly, getting kids into the kitchen can harvest other benefits. |
F.growing kids require the vitamins and minerals that vegetables provide. |
G.Research shows that repeated experiences increase food acceptance, especially in kids. |
【推荐3】A long and healthy life
Everyone wants to be healthy and live a long time.
• Believe in yourself.
• Keep your mind active.
• Be positive (乐观的).
• Love people and enjoy helping others.
The women of Okinawa, in Japan, are another great example.
But of course, diet is important, too.
The Mediterranean diet is very healthy, too. It includes vegetables, tomatoes, fish, beans, cheese and rice.
So, what do these two diets tell us?
• Don’t eat any bad fats — like fats in sweets, fried food and meat.
• Eat healthy vegetables, fruit, potatoes and rice.
•
• If you’re a little hungry, eat an apple or a carrot — not a bag of potato chips!
Eat well, live an active and stress-free life, and you’ll live a long time.
A.The fat in this diet is “good fat”. |
B.But how can we do it? |
C.Don’t use too much oil when cooking. |
D.Be active and do exercise every day. |
E.The Okinawa women eat fish, green vegetables, carrots, fruit and sweet potatoes. |
F.Why do the Japanese women live the longest? |
G.They live a long time, they are very healthy and they don’t have many diseases or heart problems. |
【推荐1】A PURR-FECT ANSWER
As a kindergarten teacher, I work with students of different reading abilities. One day, I was helping a student who was struggling to learn the letter sounds. I used flash cards with letters and pictures to help. I showed him the letters and a picture of a snake to call attention to the sound. Sss, snake. Next came the letter c. He couldn’t remember the sound, so I showed him a picture of a cat. When I asked him to tell me the sound of c, he looked puzzled and said, “Meow?”
PIANO WOMAN
When I saved a piano from an old house, I had not considered that I would need assistance moving it from the back of my pickup truck into my home. Finally, I had to drive around with it for several days. One day, a police officer pulled me over. He had seen me before and asked why I was driving around with a piano in my truck bed. I told him that my car radio had broken and I couldn’t afford a new one. He laughed—and he let me go without a ticket.
SEE DAD RUN
Like most dads, I imagine, I’d always assumed that my three-year-old son looked up to me as a superhero. Until one day, that is, when, having picked him up from school, I saw that we were about to miss our bus and decided to make a run for it. Once we were safely aboard, I noticed that my son was staring at me with his big blue eyes. “What’s the matter?” I asked him, still out of breath. He whispered, “Daddy, I didn’t know you could run.”
After moving to the country, my three-year-old daughter and I were often alone in our house. Because we lived in a rural area with no close neighbors, I wanted to make sure she would be able to call 911 in the event that something happened to me. After instructing her, I decided to test her: “OK, what would you do if you found me on the floor and you couldn’t wake me up?” I could see her little brain working. To my surprise, she said, “I would go into the kitchen and eat anything I want.”
1. Why did the police officer laugh and let the woman go without a ticket?A.Because the woman didn’t break any traffic rules on purpose that day. |
B.Because the woman was wise enough to give him appropriate explanations. |
C.Because the police officer was so kind and friendly that he wanted to help her. |
D.Because the police officer had seen the woman for several times before. |
A.CLOSE NEIGHBORS | B.YOUNG DAUGHTER |
C.SNACK EMERGENCY | D.CALL 911-HELP |
A.Fun. | B.Caring. | C.Confusing. | D.Amazing. |
【推荐2】Whether due to genuine concern for the environment or the widespread criticism of plastic among consumers, many companies have invested heavily in reducing their use of plastic packaging, which may indeed have a positive environmental impact. But another trend that’s grown out of the anti-plastic movement is a lot less positive: overpackaging. More and more brands have begun adding unnecessary paper packaging on top of plastic packaging in order to make their products look more environmentally friendly, without actually reducing plastic waste.
Unfortunately, there’s a very good reason companies are adopting this clearly problematic approach. Through a series of eight studies with more than 4,000 participants, we found that consumers will accept a product’s packaging as more environmentally friendly if it’s plastic with an additional layer of paper than if the product is visibly packaged in identical plastic packaging but without the paper. These perceptions (认知) in turn make consumers both more likely to buy a product, and willing to pay more for it.
Part of what makes this overpackaging trend particularly harmful is that it is much valued by consumers who reported engaging in more eco-friendly behaviors. They were more likely to view overpackaged products as environmentally friendly. As a result, the very consumers who are most interested in pushing companies to make sustainable choices are likely unintentionally encouraging the environmentally harmful practice of overpackaging.
The good news is, overpackaging isn’t the only way to signal sustainability and attract such consumers. In our studies, we found that instead of additional paper packaging, simply adding a minimal packaging sticker to plastic packaging could clarify the misperception that overpackaged products are more sustainable, Especially for products for which plastic is necessary to ensure safe transportation and lengthen shelf life, this kind of clear messaging can help reduce consumers, discrimination against the responsible use of plastic packaging.
Of course, minimal packaging stickers certainly should only be used if a brand has actually ensured that it is using the minimal possible packaging, ideally under the supervision of a trade organization or regulatory body that maintains clear, consistent standards.
1. What can we learn about overpackaging according to paragraph 1?A.It calls for less investment. |
B.It involves the proper use of paper. |
C.It has a positive environmental impact. |
D.It causes over-consumption of materials. |
A.They care about the environment. |
B.They are always following the trend. |
C.They like comparing products’ qualities. |
D.They prefer beautifully-decorated products. |
A.To help products stay fresh longer. |
B.To improve the brand’s popularity. |
C.To correct consumers’ misunderstanding. |
D.To present more information about products. |
A.Minimal packaging stickers have been widely used. |
B.Advantages of minimal packaging stickers are overestimated. |
C.The use of minimal packaging stickers should be strictly regulated. |
D.The use of minimal packaging stickers is a solution to over-packaging. |
However,one thing hadn't changed.If you wanted to rent a book you were still forced to use hardcopy books.Until now that is, Amazon.com recently announced the start of a new program where you can rent eBooks.
Where to rent eBooks?
As mentioned before,Amazon.com is the first and currently the only retailer (零售商) that has a program in place for renting eBooks. Luckily,Amazon is the largest online retailer in the world and their eBook assortment (分类) is massive.They are also the producer of the Kindle,the most popular eReader,which means you can be sure that the eBooks you rent will work.
You can currently only rent eTextbooks.But this is likely to change as soon as word gets out that you can save money by renting eBooks.
Why rent eBooks at Amazon?
* Save money:Save up to 80% of the normal price of the eBook.
* Decide how long you rent:From 30 days to 360 days,you decide how long you want it.You can extend the time by as little as a day.Or simply buy the eBook if you want to keep it after all.
*Use any device:If you rent an eBook from Amazon,you can read it on your PC,Mac,iPad,iPhone,Android device,Windows Phone 7.Blackberry.or Kindle.
* Keep your notes:Do you like to keep annotations (注释) and highlights in your eBooks?Don't worry.You can always revisit your notes and highlights through Amazon.com.
How to rent eBooks?
Simply search for the eBook you want to rent on Amazon.com and select the "Rent eBooks" option. After that,a new page will open where you can select how long you’d like to rent the eBook.You can read eBooks for a period of 30 to 360 days.
You decide how long you need the eBook.If you later find out you need it for longer, you can simply extend the time.Or buy it for the normal price whenever you want.
Once you've chosen the time you want to rent the eBook,you simply go to checkout.Or you can use the "Rent now" button.
1. According to the passage, ________.
A.eBooks will be changed into other types by Amazon.com |
B.eBooks will replace hardcover books in the next few years |
C.readers are able to rent eBooks only at Amazon.com now |
D.readers get a discount of at least 20% of the normal price |
A.Open a new page. | B.Select the "Rent eBooks" option. |
C.Press "Rent now" button. | D.Choose a rental date. |
A.discuss and assess | B.inform and explain |
C.compare and evaluate | D.describe and argue |