It is a tall tale that terrifies most young children. Swallow a piece of chewing gum and it will remain in your body for seven years before it is digested. An even worse tale is that swallowed gum can wrap itself around your heart.
But what does happen if you should accidentally eat a stick of gum? Chewing gum is made out of gum base, sweeteners, coloring and flavoring. The gum base is pretty indigestible一it is a mixture of different ingredients that our body can’t absorb.
Most of the time, your stomach really cannot break down the gum the way it would break down other foods. However, your digestive system has another way to deal with things you swallow. After all, we eat lots of things that we are unable to fully digest. They keep moving along until they make it all the way through the gut and come out at the other end one or two days later.
The saliva in our mouths will make an attempt at digesting chewing gum as soon as we put it in our mouths. It might get through the shell but many of gum’s base ingredients are indigestible. It’s then down to our stomach muscles一which contract and relax, much like the way an earthworm moves一 to slowly force the things that we swallow through our systems.
Swallowing a huge piece of gum or swallowing many small pieces of gum in a short time can cause a blockage within the digestive system, most often in children, who have a thinner digestive tube than adults 一but this is extremely rare.
【小题1】Children might feel terrified after swallowing chewing gum mainly because .
| A．they believe the tall tales about chewing gum |
| B．chewing gum will stay in their body for years |
| C．their heart will be wrapped by chewing gum |
| D．chewing gum is indigestible for children |
| A．It remains in our digestive system forever. |
| B．It will be eventually moved out of our body. |
| C．It will fight against the power of the gut. |
| D．It will stick to the gut for one or two days. |
| A．How does our digestive system work? |
| B．Can chewing gum be swallowed by kids? |
| C．Does swallowing chewing gum matter? |
| D．Why swallowing chewing gum frightens kids? |
【小题1】A
【小题2】B
【小题3】C
解析试题分析: 人们传言吞食的口香糖要花七八年才能消化，甚至还有传言说口香糖在在你的肚子里缠绕。然而，事实的真相是对于那些不能被消化的食物，人体的消化系统会将它们排除体外。
【小题1】A。推理判断题。根据文章第一段It is a tall tale that terrifies most young children. 和An even worse tale is that swallowed gum can wrap itself around your heart.可知因为听了许多关于口香糖的故事，所以孩子们会对吞食口香糖感到恐惧。故选A。
【小题2】B。细节题。根据第三段They keep moving along until they make it all the way through the gut and come out at the other end one or two days later. 可知那些不能被消化的食物最后会被排除体外。故选B。
【小题3】C。标题推测题。通读文章可知，本文主要针对吞食口香糖是否有危害这个问题进行了解释，澄清口香糖会在人体内缠绕的谣言。故选C。
考点：考查科普类短文阅读。
科目：高中英语 来源： 题型：阅读理解
Since the end of World War I(WWI) in 1918, Canadians, and millions of others around the world have paused at the 11th hour of the 11th day of the 11th month to honour the sacrifice our soldiers have made in different ways, fighting for the freedoms that we all enjoy today.
Known as Remembrance Day, the day originated as a tribute to the soldiers of WWI, a dark period for our young country, which claimed the lives of over 60,000 military personnel and civilians and over 16 million dead worldwide. As there are no more surviving soldiers of WWI, today we rely on the wisdom and words of those soldiers who fought in the wars that followed and this day now also recognizes their heroic contribution. They tell us to always remember what those brave souls fought for, and all they ask in return is that we never forget.
That’s why we wear the red poppy(罂粟花)；that’s why when we see a soldier in uniform we should stop him or her and say “Thank you”; that’s why we take a pause from our busy lives for two short minutes today to honor that request. Yet this message is fading away, year after year. Take for example the terrible decision to allow parents to excuse students from Remembrance Day ceremonies at school. Not only is this disrespectful, it distances the student from his or her classmates.
It is difficult to understand why any Canadian parent would want to remove their child from the time-honored tradition of reading the poem in Flanders Fields, while a wreath of poppies is laid. It is more important than ever to teach school-aged children about our history, no matter how violent it was. Sheltering them from the realities of war is a great disservice. Understanding why conflicts happened, or happen today can help shape choices and decisions they make as adults.
Of course, because we live in a free society, we cannot force an individual to do something. It is unfortunate, but some parents now have their child “opt-out” of the services. These people should be reminded they are free to make such choices only because of the men and women the rest of us are remembering.
【小题1】Which of the following is NOT mentioned as a Remembrance Day activity today?
| A．Stopping at 11a.m. to remember the war dead. |
| B．Listening to stories told by WWI soldiers. |
| C．Wearing a red poppy to show respect. |
| D．Showing gratitude to soldiers in uniform. |
| A．War history is too violent for school children |
| B．The writer was once a soldier in the Canadian army |
| C．Few students are willing to take part in Remembrance Day ceremonies. |
| D．More parents are keeping their children away from frightening war stories. |
| A．the death of so many soldiers in wars |
| B．the fact that there were so many wars after WWI. |
| C．people’s ungratefulness for the freedom they have. |
| D．removing children from Remembrance Day events. |
| A．the sacrifice of the soldiers should always be remembered. |
| B．Remembrance Day is becoming less important for soldiers. |
| C．school no longer think Remembrance Day is necessary. |
| D．people should be forced to learn about the realities of war. |
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科目：高中英语 来源： 题型：阅读理解
Even when you’re extremely busy, you aren’t using your time with 100% efficiency. There are gaps in everyone’s schedule where they aren’t doing anything important. Even if your schedule has no gaps, there is probably lots of time when you aren’t working as fast or as effectively as you possibly could.
Why aren’t you completely efficient? It’s because time isn’t the limiting factor. If it were the limiting factor, people could work non-stop without breaks or any unproductive distractions (消遣). Instead, people, even those who are highly productive, need to take breaks, occasionally procrastinate (拖延) and slow down on tasks throughout the day.
The real and most important limiting factor for productivity is your energy levels to pay attention. Energy levels limit your productivity because when you’re tired, you can have enough time and still not get everything done. Your attention ability is also limited, because even if there are a million things that need to be done, you can only focus on one or two at a time.
You might not be able to insert another 4-5 hours into your schedule without making some sacrifices. But even extremely busy people can add an hour or two into their schedule without cancelling anything. The reason why it’s hard to “find time” isn’t a lack of time. It’s because you don’t have enough energy left to focus on something else that needs to fit into your day.
I first suspected time wasn’t the real problem during an extremely busy period in my life over a year ago. I was extremely busy, but at that time I still exercised regularly. I had daily to-do lists with over twenty items, and I still found time to exercise. However, after a few weeks off, due to illness, I stopped exercising. I was not busy by any standards, in fact, my schedule was incredibly light. Despite this free time, I found it hard to find time to exercise. It seemed to get pushed later and later into my schedule until it was gone. How can I explain this odd experience? I believe you have known it.
【小题1】If someone can’t work with 100% efficiency, the most important limiting factor is ________.
| A．a schedule without gaps | B．breaks and distractions |
| C．the limited time | D．the limited energy |
| A．work without any rest |
| B．focus on many things at a time |
| C．find some more time in a day |
| D．do some exercise regularly |
| A．prove what the real limiting factor is |
| B．show us how busily he needs to work |
| C．explain how important a healthy body is |
| D．tell us what an odd experience he has |
| A．Do You Really Lack Time? |
| B．How Can You Work Efficiently? |
| C．What Makes Your Energy Limited? |
| D．When Should You Do Exercise? |
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科目：高中英语 来源： 题型：阅读理解
A world-famous Canadian author, Margaret Atwood, has created the world’s first long-distance signing device(装置), the LongPen.
After many tiring book-signing tours from city to city, Atwood thought there must be a better way to do them. She hired some technical experts and started her own company in 2004. Together they designed the LongPen. Here’s how it works: The author writes a personal message and signature on a computer tablet(手写板) using a special pen. On the receiving end, in another city, a robotic arm fitted with a regular pen signs the book. The author and fan can talk with each other via webcams(网络摄像机) and computer screens.
Work on the LongPen began in Atwood’s basement(地下室). At first, they had no idea it would be as hard as it turned out to be. The device went through several versions, including one that actually had smoke coming out of it. The investing finally completed, test runs were made in Ottawa, and the LongPen was officially launched at the 2006 London Book Fair. From here , Atwood conducted two transatlantic book signings of her latest book for fans in Toronto and New York City.
The LongPen produces a unique signature each time because it copies the movement of the author in real time. It has several other potential applications. It could increase credit card security and allow people to sign contracts from another province. The video exchange between signer and receiver can be recorded on DVD for proof when legal documents are used.
“It’s really fun”, said the owner of a bookstore, who was present for one of the test runs. “Obviously you can’t shake hands with the author, but there are chances for a connection that you don’t get from a regular book signing.”
The response to the invention has not been all favorable. Atwood has received criticism from authors who think she is trying to end book tours. But she said, “It will be possible to go to places that you never got sent to before because the publishers couldn’t afford it.”
【小题1】Why did Atwood decide to invent the LongPen?
| A．To set up her own company. |
| B．To win herself greater popularity. |
| C．To write her books in a new way. |
| D．To make book signings less tiring. |
| A．It copies the author’s signature and prints it on a book. |
| B．It signs a book while receiving the author’s signature. |
| C．The webcam sends the author’s signature to another city. |
| D．The fan uses it to copy the author’s signature himself. |
| A．It has been completed but not put into use. |
| B．The basement caught fire by accident. |
| C．Some versions failed before its test run. |
| D．The designers were well-prepared for the difficulty. |
| A．To draft legal documents. |
| B．To improve credit card security |
| C．To keep a record of the author’s ideas. |
| D．To allow author and fan to exchange videos |
| A．Atwood doesn’t mean to end book tours. |
| B．Critics think the LongPen is of little use |
| C．Bookstore owners don’t support the LongPen |
| D．Publishers dislike the LongPen for its high cost. |
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科目：高中英语 来源： 题型：阅读理解
One of the most important recent medical breakthroughs has been the impact of gut flora（肠道菌群）on overall health. This dynamic mix of bacteria in the digestive tract（消化道）may affect everything from obesity to asthma（哮喘）．
The Gut-Mood Link
Anyone who's ever experienced "butterflies" in his or her stomach knows that the gut and the brain are connected. But until recently, scientists hadn't realized that the trillions of bacteria in our digestive tract may be driving the relationship.
One recent experiment suggests that you can control calm. Canadian researchers gave healthy mice a mixture of antibiotics, which change the makeup of GI-tract（胃肠道）bacteria. Over two weeks, some animals became more anxious and some less, depending on which drugs they received. In another study, when gut bacteria from calm mice were transferred to anxious mice, the jittery（紧张的）creatures seemed less nervous.
UCLA professor Kirsten Tillisch, doctor of medicine, recently had healthy women eat a yogurt
rich in certain types of "good" probiotic（益生菌的）bacteria. Two 'Control groups ate yogurt without such bacteria or ate nothing. Brain scans of the probiotic-yogurt eaters indicated changes in regions that could be associated with a less-anxious response in fearful or stressful situations compared with the control groups.
Scientists are even exploring whether gut microbes（微生物）might treat some brain disorders. A new study in Cell found that mice with features of autism（自ICJ症）given a type of bacteria in healthy human GI tracts exhibited less autism-like behavior. In a recent case report, a Boston ps. chiatrist says a course of certain probiotics and antibiotics helped relieve a patient's compulsive disorder. -We tend to focus on how your mood affects your body from the top down, not the bottom up," says Dr. Tillisch. "Now we know that the gut affects how your brain responds to the environment- it's a remarkable change in thinking.”
How Bacteria Talk to the Brain Scientists aren't sure how gut flora affect brain chemistry. One theory is that the bacteria access pathways along the nerve, the main highway in the nervous system that links the brain to the gut. Another is that the bacteria influence the immune system, releasing chemicals that affect conditions like depression. Finally, researchers believe that bacteria produce or affect the metabolism（新陈代泻'i) of chemicals, which change brain function.
Dr. Tillisch told me that patients always ask which probiotics will lift their mood．Her answer:
"We don't know yet, but we hope to one day." In the future, patients might receive probiotics or transplant（移植） in which bacteria from the gut of a healthy person are transferred to the gut of a sic': one-to prevent or treat mental health issues. But these approaches are years away from primary time．Until then, a diet rich in fruit and veggies helps cultivate（培养）better-balanced microbes than a typical Western diet high in animal and processed products. Avoiding unnecessary antibiotics, particularly in early childhood, may also establish healthier gut bacteria.
【小题1】 According to the passage, gut bacteria might help us in many ways EXCEPT＿_．
| A．lightening our mood | B．treating autism |
| C．relieving depression | D．transplanting gut flora |
| A．Paragraph 2 | B．Paragraph 3 |
| C．Paragraph 4 | D．Paragraph 5 |
| A．Cultivating a Happier Gut |
| B．Growing Bacteria in the Future |
| C．Balancing Microbes and Diet |
| D．Living a Happy Healthy Life |
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科目：高中英语 来源： 题型：阅读理解
The deserts of the world are not all covered with sand. Many of them have surfaces of rock or clay or small stones. They are not flat, either. They often have high hills and deep valleys. There is some plants’ life in many parts of the desert. There is little rain in the desert, but it does fall often enough for most plants.
The deserts of the world are not uninhabited(not lived by people). People also live outside oases(绿洲), but these people are not farmers. They have camels, goats, donkeys, sheep, etc. These animals can live on the desert plants and do not need much water.
The people of the desert have to move constantly from place to place, they must always look for grass or desert plants for their animals. They usually live in tents. When there is no more food for their animals, they fold up their tents, pat them on their camels and donkeys, and move to another place. In good years, when there is enough food for their animals, they trade their skins and their goats and camel hairs with the people of oases for wheat and fruit. But in bad years, when there is not enough food for their animals, the people of the desert would attack the oases people. But they are also hospitable, no man in the desert would ever refuse to give a stranger food and water.
【小题1】According to the passage, deserts are mostly made up of _______.
| A．clay | B．rock |
| C．stones | D．sand |
| A．brave | B．cruel |
| C．strange | D．kind |
| A．it rains in spring only |
| B．there is some rain, but far from enough |
| C．it rains for a short time every month |
| D．the rainfall is just enough for the plants |
| A．only inside the oases |
| B．only outside the oases |
| C．both inside and outside the oases |
| D．in places with regular rainfalls |
| A．is hard in deserts |
| B．is happy in deserts |
| C．is impossible in deserts |
| D．in deserts in much better now |
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科目：高中英语 来源： 题型：阅读理解
Grasshoppers are having to change their song — one of the iconic sounds of summer — to make themselves heard above the noise of road traffic, ecologists have discovered. The study, published in the British Ecological Society's journal Functional Ecology, is the first to show that human-made noise affects natural insect populations. Animals use sound to communicate for many reasons, including marking out territory, warning of predators and finding mates, and although previous research shows birds, whales and even frogs change their calls in noisy environments, the impact of human-made noise on insects has been neglected until now. Ulrike Lampe and colleagues from the University of Bielefeld in Germany caught 188 male bow-winged grasshoppers, half from quiet locations and half from beside busy roads. The grasshoppers use their song to attract mates.
The team then studied the differences in the two groups' songs in the laboratory. To encourage them to sing they exposed the males to a female grasshopper, and then recorded their courtship songs. Analysis of almost 1,000 recordings revealed grasshoppers living beside noisy roads produced different songs to those living in quieter locations.
According to Lampe: "Bow-winged grasshoppers produce songs that include low and high frequency components. We found that grasshoppers from noisy habitats increase the volume of the lower-frequency part of their song, which makes sense since road noise can mask signals in this part of the frequency spectrum(频谱)."
The team's findings are important because traffic noise could be upsetting the grasshopper's mating system(交配系统). "Increased noise levels could affect grasshopper courtship in several ways. It could prevent females from hearing male courtship songs properly, prevent females from recognizing males of their own species, or impair females' ability to estimate how attractive a male is from his song," Lampe explains.
Having discovered that human-made noise affects insect communication, the researchers now want to learn more about how the mechanism works, and whether the grasshoppers adapt to noise during their development as larvae（幼虫）, or whether males from noisy habitats produce different songs due to genetic differences.
The bow-winged grasshopper is a common species in Central Europe. Adults occur mainly between July and September, preferring dry grasslands. Around 1.5 cm long, they vary in colour from green and browns to red and purple. The male's song consists of 2 second-long phrases that increase in amplitude (振幅) towards the end. The beginning of a phrase is characterized by slower ticking sounds that increase in speed and amplitude, leading to a buzzing sound towards the end of the phrase. A courtship song usually includes 2 phrases.
【小题1】The author wrote the article to _________________.
| A．introduce how grasshoppers make noises to attract mates. |
| B．raise the awareness of protecting bow-winged grasshoppers. |
| C．inform us of a recent discovery of ecological research. |
| D．warn us that human-made noise has changed ecological system. |
| A．Bow-winged grasshoppers use their songs to communicate. |
| B．Grasshoppers change their songs to adapt to the noisy environment. |
| C．Grasshoppers’ songs include both low and high frequency components. |
| D．Bow-winged grasshoppers are a common species in Central Europe. |
| A．repair | B．develop |
| C．weaken | D．improve |
| A．Road noise can cover the lower-frequency part of their song. |
| B．Animals make sounds only for the purpose of finding mates. |
| C．Grasshopper larvae learn to adapt to human-made noise. |
| D．Bow-winged grasshoppers grow up into adults in spring. |
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科目：高中英语 来源： 题型：阅读理解
When asked about happiness, we usually think of something extraordinary, an absolute delight, which seems to get rarer the older we get.
For kids, happiness has a magical quality. Their delight at winning a race or getting a new bike is unreserved(毫无掩饰的)．
In the teenage years the concept of happiness changes. Suddenly it's conditional on such things as excitement, love and popularity. I can still recall the excitement of being invited to dance with the most attractive boy at the school party.
In adulthood the things that bring deep joy—love, marriage, birth—also bring responsibility and the risk of loss.For adults, happiness is complicated(复杂的)．
My definition of happiness is “the capacity for enjoyment”．The more we can enjoy what we have, the happier we are.It's easy to overlook the pleasure we get from the company of friends, the freedom to live where we please, and even good health.
I experienced my little moments of pleasure yesterday. First I was overjoyed when I shut the last lunch－box and had the house to myself. Then I spent an uninterrupted morning writing, which I love. When the kids and my husband came home, I enjoyed their noise after the quiet of the day.
Psychologists tell us that to be happy we need a mix of enjoyable leisure time and satisfying work.I don't think that my grandmother, who raised 14 children, had much of either. She did have a network of close friends and family, and maybe this is what satisfied her.
We, however, with so many choices and such pressure to succeed in every area, have turned happiness into one more thing we've got to have. We're so self－conscious about our “right” to it that it's making us miserable. So we chase it and equal it with wealth and success, without noticing that the people who have those things aren't necessarily happier.
Happiness isn't about what happens to us—it's about how we see what happens to us. It's the skillful way of finding a positive for every negative. It's not wishing for what we don't have, but enjoying what we do possess.
【小题1】As people grow older, they ________．
| A．feel it harder to experience happiness . |
| B．associate their happiness less with others |
| C．will take fewer risks in pursuing happiness |
| D．tend to believe responsibility means happiness |
| A．She cares little about her own health. |
| B．She enjoys the freedom of traveling. |
| C．She is easily pleased by things in daily life. |
| D．She prefers getting pleasure from housework. |
| A．Psychologists think satisfying work is key to happiness. |
| B．Psychologists' opinion is well proved by Grandma's case. |
| C．Grandma often found time for social gatherings. |
| D．Grandma's happiness came from modest expectations of life. |
| A．consider pressure something blocking their way |
| B．stress their right to happiness too much |
| C．are at a loss to make correct choices |
| D．are more likely to be happy |
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科目：高中英语 来源： 题型：阅读理解
(2014·德州模拟)Some animals will defend their territory by fighting with those who try to invade it.Fighting，however，is not often the best choice，since it uses up a large amount of energy，and can result in injury or even death.Most animals rely on various threats，either through sounds or smells.The songs of birds，the drumming of woodpeckers and the loud calls of monkeys are all warnings that carry for long distances，advertising to possible invaders that someone else’s territory is being approached.Many animals rely on smells to mark their territories or leaving droppings around the territories.Other animals will be warned off the territory without ever meeting with the territory’s defender. 
Sometimes，these warnings may be ignored，and an invader may move accidentally into a neighboring territory，or two animals may meet near the border of their nearby territories.When the two animals meet，they will generally threaten each other with visual (视觉的) displays.These displays will often exaggerate an animal’s size by putting up feathers or fur，or will show off the animal’s weapons.The animals may go through all the behavior of fighting without ever actually touching each other.The displays are generally performed best near the center of an animal’s territory，where it is more likely to attack an invader and where retreating becomes more of a choice.
Actual fighting usually only happens in overcrowded conditions，when resources are not enough.Serious injury can result，and old or sick animals may die，leading to a more balanced population size.Under most natural conditions，territoriality is an effective way of maintaining a healthy population.The study of social behaviors such as territoriality in animals may also help us to understand human society.
【小题1】What topic is the passage mainly involved in?
| A．What animals’ territory is usually like. |
| B．How animals deal with different threats. |
| C．How animals defend their territory. |
| D．Where animal fights take place frequently. |
| A．Fighting in groups. |
| B．Threatening and warning. |
| C．Escaping before being hurt. |
| D．Asking partners for help. |
| A．enlarge | B．change |
| C．shake | D．shrink |
| A．animals meet near the border of their territories |
| B．the invader enters the defender’s territories |
| C．the defender notices the invader smaller than itself |
| D．the living resources are limited in the territory |
| A．communication | B．condition |
| C．population | D．migration |
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