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There’s been lots of concern recently about the potential dangers of microwave popcorn (爆米花), but is this concern founded, or just overmuch fear-spreading? The answer is that many of the chemicals that caused worry in earlier decades have been removed from microwave popcorn, but some critics still are not satisfied.

“You may consider popcorn to be a low-calorie, high-fiber snack, but microwave popcorn isn’t a healthy choice,” explains nutrition expert Dan DeFigio. That’s because microwave popcorn bags were coated with perfluorinated chemicals (PFCs) to prevent oil substance from leaking out. One particular type of PFC, known as perfluorooctanoic acid (PFOA), has been linked to certain cancers, but the American Cancer Society says the evidence is unsure and more research is being done about this.

Nevertheless, in response to concerns about PFCs, the U.S. Food and Drug Administration (FDA) worked with popcorn makers back in 2011 to remove PFOA from their packaging. Three more PFCs were banned in the next five years. So today’s microwave popcorn doesn’t have these chemicals, but critics say that the alternatives could cause problems as the old ones, but less is known about them.

That’s not the only problem, however. The chemical that for decades lent buttery deliciousness to popcorn has also been connected in rare cases with major lung damage. Known as diacetyl (二乙酰), it’s long been a documented problem with workers in popcorn making facilities, but also can be risky for people who just eat the snack a lot. A 2007 study published in the journal Critical Reviews found that more than 80 percent of chemical release happened when the bag was opened post-popping. Although diacetyl has been removed from most products, some critics claim that the alternative to diacetyl is also harmful.

Most of the exposure to diacetyl came from inbreathing rather than eating popcorn. Therefore, experts recommend at least waiting for the bag to cool before you open it to reduce potentially harmful chemical exposure. Better yet, make your own fresh at home with an air popper. If you like to flavor it, add organic butter or some cheese.

【小题1】What can we know about PFOA from the text?
A.PFOA doesn’t exist in Popcorn bags in America currently.
B.PFOA can stop the leak of nutrition.
C.PFOA in popcorn bags leads to cancer.
D.PFOA has been removed from PFCs.
【小题2】According to the text, who are most probably exposed to diacetyl?
A.Critics claiming diacetyl is harmful.
B.Workers making popcorn in factories.
C.People making popcorn with an air popper.
D.Consumers eating microwave popcorn occasionally.
【小题3】What does the last paragraph intend to tell us?
A.How to flavor popcorn.
B.How to make popcorn at home.
C.How to make popcorn safer.
D.How to find alternatives to diacetyl.
【小题4】What is the topic of the text?
A.Is Popcorn a Healthy Choice?
B.Should We Ban Microwave Popcorn?
C.Should PFCs Be Removed from Microwave Popcorn?
D.Is Microwave Popcorn Really Dangerous?
23-24高二上·辽宁·阶段练习
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As people are becoming more socially conscious about where their food comes from and how it impacts the planet, they are choosing animal-free plant-based options. Cow-free meat has been around for quite some time and the popularity of brands like Beyond Meat and cultivated meat from Aleph Farms and other are soaring. While there are a large number of plant-based milk substitutes, none of have the same taste of cow’ milk. Now, an Israeli food-tech startup Remilk created real dairy products without harming a single cow or the planet.

The company stresses that their product Remilk is not a milk substitute but rather is the real deal. Made from a special process called microbial fermentation, milk is manufactured in a lab instead of in a cow. And the end product is very healthy. “In a very simple way, we take the gene that encodes for the milk protein,” said Aviv Wolf, CEO of Remilk. “The gene function as an instruction book for the production of the protein it encodes. And so, we insert the gene into a microbe that we’ve developed and it instructs our microbe to produce the specific protein in a very efficient way.”

The company says that the lab-produced milk tastes identical to the real thing and they hope to eventually replace cows by creating every dairy product sold. They expect to roll out plant-based cheese and yogurt in addition to milk. “Remilk was founded with the mission to stop using animal to produce our food because, as dairy lovers, we realize that giving up on milk is not an option,” Wolff said. “But today’s milk comes with an unreasonable price tag. The dairy industry is destructive to our planet, our health, and our animals, and is simply not sustainable any more.”

The environmental price tag of dairy farming is way too high. According to the World Wildlife Fund, dairy cows add a huge amount of greenhouse gasses to the atmosphere and contribute to global warming and climate change as well as foul the air around them. Dairy operation consume large amounts of water and run-off of manure and fertilizers from there farms get into local waterways. The production of Remilk uses only 5 percent of the resources and produces only 1 percent of the waste of producing cow’s milk according to company. And they accomplish this by being 100 percent cruelty-free dairy farms.

【小题1】What distinguishes Remilk from other milk substitutes?
A.It enjoys broad popularity.B.It has the highest output.
C.It comes in various flavours.D.It tastes the same as cow’s milk.
【小题2】What is paragraph 2 mainly about?
A.The production of Remilk.B.The nutritional value of Remilk.
C.The role of gene in making protein.D.The process of microbial fermentation.
【小题3】What can we know form Wolff’s words in paragraph 3?
A.Remilk was set up for animal protection.B.Dairy industries should be shut down.
C.Remilk aims to produce animal-free food.D.Price of cow’s milk are soaring there days.
【小题4】What does the underlined word “foul” probably mean in the last paragraph?
A.Clean.B.Heat.C.Pollute.D.Consume.

Tomatoes taste great. With a lot of vitamins, they are good for you, too! People around the world enjoy this amazing fruit.

Not all tomatoes are red. They can be yellow, orange, pink or white. All tomatoes are green before they are ready to be picked. Then the tomatoes turn their true color. That’s when they are ready to eat!

Tomatoes first grew in the Americas. The Incas (印加人) grew them over 1,000 years ago. They were introduced to Europe by the Spanish in the early 16th century. The Spanish and Italians seem to have been the first Europeans to accept them as food. In France, people grew tomatoes in the garden just to enjoy their beauty. Many people there thought tomatoes would make them sick. It was years before some of them would eat tomatoes.

Tomatoes are fruits. They grow from seeds. They won’t grow in cold weather. But with water, sunlight and warmth, tomatoes grow fast. They can grow in pots or in the ground. As the plant grows taller, people may tie it to a stick. Next is the blooming stage. Flowers appear. The flowers turn into fruit. Some kinds of tomatoes can be picked in about six more weeks. Some tomatoes are large. One kind of tomato can weigh as much as two pounds.

You can eat raw tomatoes. First, wash them. Then, cut them up for salads or sandwiches. Tomatoes can be cooked, too. They can be grilled, boiled, or even fried. Do you use ketchup (番茄酱)? It is made from tomatoes. Tomatoes don’t have a smell. But they taste great in foods around the world. Many dishes from India use tomatoes. Italians use them to make spaghetti sauce and pizza, too.

【小题1】What can we know from the passage?
A.Tomatoes come in different colors.B.Tomatoes grew in Europe first.
C.Tomatoes can grow in all weathers.D.Tomatoes have a special smell.
【小题2】What does the underlined word “stage” in Paragraph 4 mean?
A.Time.B.Board.C.Set.D.Flower.
【小题3】Which of the following best shows the structure of the passage?
A. B.C.D.
【小题4】What’s the theme (主题) of the passage?
A.Family.B.Food.C.Science.D.Health.

Food is life; it gives us the nourishment we need to stay alive and be healthy. Usually, we eat because we are hungry or need energy. Brian Wan sink, a professor at the University of Illinois, says we also eat certain foods because they make us feel good, and remind us of happy memories.【小题1】For some people, ice cream is a comfort food. For others, a bowl of noodle soup makes them feel good.

【小题2】Professor Wan sink believes that we connect food with important times, feelings, and people in our lives. “When I was a child, my mother made a delicious soup. I loved it.【小题3】And it helps me feel better,” says one of Wan sink’s coworkers.

Do men and women choose different comfort foods? Wan sink’s research at the University of Illinois says “yes”. In his study, the favorite comfort food for both men and women was ice cream. After this, men usually preferred hot, savory (味香的) foods like soup or noodles.【小题4】Men and women like to eat comfort foods when they are happy, but women eat these foods more when they are sad or worried.

【小题5】About 40 percent of the comfort foods in Wansink’s study were healthy main dishes or soups and vegetables. It shows, says Wansink, that a comfort food can taste good and be good for you.

A.Where can we buy this sort of food?
B.How does a food become comfort food?
C.Not all comfort food is junk food.
D.Women liked sweet things such as chocolate and cookies.
E.Sweet foods are also their preference.
F.Wan sink calls this kind of food comfort food.
G.Now, I often have this kind of food when I am tired or worried.

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