试题详情
阅读理解-阅读单选 适中0.65 引用3 组卷64

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.

【小题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.
【小题2】What does the underlined word “culprit” mean in the second paragraph?
A.Disease.B.Sweet food.
C.A solution.D.Cause of the problem.
【小题3】According to the passage, why is it so hard to avoid sugar?
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.
【小题4】Which of the following is true according to the passage?
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.
21-22高三上·江苏苏州·阶段练习
知识点:健康饮食 说明文 答案解析 【答案】很抱歉,登录后才可免费查看答案和解析!
类题推荐

Too much sugar intake can contribute to various diseases. So when you unavoidably eat foods loaded with sugar, is there a way to reduce the impact? Recent studies suggest there could be a few tricks to eating healthy, and they don't involve reducing your sugar intake.

Sugar often gets a bad reputation because we eat it alone. If foods are loaded with simple carbohydrates, they rapidly increase blood sugar levels. When this happens, we try to bring the sharp increase down by increasing the production of sugar-lowering hormones such as insulin and incretin. If we increase them too much too often, this mechanism stops working, which can lead to type 2 diabetes.

But there are ways to prevent. People can start by simply eating less sugar, or eating it with other foods. Perhaps the best type of food to eat sugar with is protein. The intake of protein leads to the release of glucagon, another hormone, which maintains insulin levels.

Some recent research suggests we should take one step further. Studies show the order in which you eat various types of food matters. The most recent study had participants—all with type 2 diabetes eat the same meal on three different days, but in various order. One day, they ate carbohydrates first, followed 10 minutes later by protein and vegetables, then protein and vegetables first, followed by carbohydrates 10 minutes after, and finally everything eaten together at the same time.

Researchers measured their blood sugar levels just after the meals and every 30 minutes for the next three hours. They found peaks in blood sugar levels when carbohydrates were eaten last were all around 50 percent lower than when they were eaten first. Even eating everything at once produced a spike 40 percent higher than that seen when carbohydrates came last.

The findings are pretty significant. It's probably fruitless to promise yourself you won't eat any sugary treats this holiday season. But follow the tips, and you can still enjoy the delicious homemade apple pie.

【小题1】What directly causes people to get type 2 diabetes?
A.The intake of foods loaded with sugarB.The production of sugar-lowering hormones
C.The breakdown of sugar-lowering mechanismD.The reduction of sugar-lowering hormones
【小题2】Which of the following is useful if you want to prevent type 2 diabetes according to the passage?
A.Increasing the intake of sugarB.Eating protein
C.Producing gas much as possibleD.Avoiding eating vegetables
【小题3】Which of the following is a healthy eating habit?
A.Apple pies first, followed by protein
B.Everything eaten together at the same time
C.Protein and vegetables first, followed by dessert
D.Dessert first, followed by sugar treats and vegetables
【小题4】What does the passage mainly talk about?
A.How to keep a healthy dietB.Why to totally ban our sugar intake
C.Why to eat various types of foodD.How to reduce the impact of sugar intake

What to Eat—and What to Skip—When It Comes to Takeout Food

If the burden on your wallet doesn't bother you much, the effect your takeout habit can have on your waistline just might arouse your attention. Here's the best and worst of the lot for your belly.

Steamed Vegetable Dumplings: Order This.

When she orders Chinese, registered dietitian nutritionist Elisa Zied gets an order of steamed vegetable dumplings. "I often pair them with either chicken and broccoli in brown sauce(I ask for a little sauce made without sugar)or steamed shrimp dumplings," she tells us.

Crab Wontons: Not That!

When you deconstruct crab wontons, it's easy to see why they're a "Not That!" The inside is filled with crabmeat and cream cheese(which is just a fancy, spreadable fat).The wonton is made of refined flour, egg and salt and the crispy(脆的)coating is a result of a deep oil bath.

Peking Duck: Order This.

Most of the fat from the skin flows out of the duck over the course of cooking, making this a healthier choice than most of the stir-fry dishes available. Order a side of steamed vegetables and serve it with a small scoop of brown rice. Done and done!

Sweet and Sour Anything: Not That!

Anything with “sweet and sour” in its title is a powerful cue that something has been deep-fried and covered in a sickly-sweet pink sauce. If you pair your selection with a side of rice, you're looking at a 1,000-calorie meal.

Summer Roll: Order This.

Summer rolls are steamed instead of fried—and typically filled with lean proteins and vegetables, making them a winning appetizer in our book. Pair them with an order of edamame(毛豆)and a broth-based soup for a satisfying, filling meal.

Spring Roll: Not That!

Spring=deep-fried, which is why we say to skip them! They're filled with fat and calories your belly doesn't need.

【小题1】What kind of cooking method should be skipped according to the text?
A.Steaming.B.Stir-frying.
C.Deep-frying.D.Boiling.
【小题2】Which of the following suits as a good starter for a meal?
A.Chicken and broccoli.B.Steamed vegetable dumplings.
C.Peking duck.D.Summer rolls.
【小题3】Where can the text be found?
A.In a recipe.B.In a guidebook.
C.In a science fiction.D.In a health magazine.

In principle, it sounds simple: eat less and move more. 【小题1】 Yet, despite all the calorie counting, dieting and exercising, worldwide obesity (肥胖) rates just keep speeding up. People in the US were heavier in 2021 than they were in 2020, placing many more people at risk from serious diseases.

So why hasn’t this approach to weight control worked? One possibility is that we haven’t tried hard enough. 【小题2】 Or perhaps the problem is the focus on “calorie balance” itself. In a recent paper, my colleagues and I question the basic assumption of whether taking in more calories than you burn really is the chief cause of obesity. We argue that the evidence actually points the other way: we are driven to overeat because we are getting fatter.

【小题3】 As their growth rate speeds up, teenagers may eat hundreds of calories more each day than they used to. Does this “overeating” cause the rapid growth? Or does the rapid growth, which requires more calories to build new body tissues, make teenagers hungrier so they eat more? Clearly the latter, as adults won’t grow taller, no matter how much they eat.

The key to how this works in obesity is hormones (激素), especially the fat-storage hormone. Processed, rapidly digestible high-carbon foods like potato chips and sugary drinks raise our hormone level too high. 【小题4】 A few hours after eating a high-carbon meal, the number of calories in the bloodstream falls rapidly, so we get hungrier sooner after eating.

Therefore, in order to prevent and treat weight problems, the emphasis should be placed on what to eat instead of how much we eat. Replacing processed high-carbon foods with high-fat foods-such as nuts-lowers the hormone obtainable for the rest of the body. 【小题5】

Although much more research will be needed to test this idea, it is time to question the basic assumptions about cause and effect, calories and weight gain that have dominated our thinking for decades.

A.Weight control becomes a battle between dieting and exercising.
B.This may seem incredible but consider the rapid growth of teenagers.
C.The dietary advice for dealing with obesity has been around for decades.
D.We have lacked willpower to maintain healthy dietary and exercise habits.
E.A low-calorie diet further restricts an already limited supply of energy to the body.
F.This causes our fat cells to store too many calories, leaving fewer for the rest of the body.
G.In fact, high-fat foods may help decrease body fat, a possibility supported by medical practices.

组卷网是一个信息分享及获取的平台,不能确保所有知识产权权属清晰,如您发现相关试题侵犯您的合法权益,请联系组卷网