Have you ever heard loud honking calls and looked up to see geese flying in a V-formation?
Geese are among the animals that travel south for the winter. In spring, they return to their summer homes in the north. Their journeys are known as migrations.
Monarch butterflies make amazing journeys too. Each autumn, millions of monarch butterflies in North America migrate. Monarchs from west of the Rocky Mountains fly to California. Monarchs in the east of the Rockies fly to Mexico. The butterflies’ journeys may take a month. During and after the long flight, the butterflies gather together. Thousands of monarch butterflies cover the trees in these gathering places. Most adult monarchs migrate south only once. The females lay their eggs and then die. The young butterflies make the return trip back north in the spring.
Green turtles also migrate to lay their eggs. Some kinds migrate long distances. They swim across the Atlantic Ocean from South America to lay their eggs on Ascension Island. It’s a distance of about 1,300 miles (2,000 kilometres). After the eggs are laid, the adult turtles return to Brazil’s coastal waters. They leave their young to hatch on the beach and find their way to the sea. Two years later, the young turtles swim back to the beach of their birth to lay their own eggs.
No one understands exactly how migrating animals know when to migrate or how they find their way. Some experts think that the shortening days in fall or the lengthening days in spring may act as a signal to birds and other animals. Such signals indicate that it is time to start their long journey.
Once on their way, birds are thought to navigate by the Sun and stars. Research shows that birds also may be sensitive to Earth’s magnetic field-the space around Earth where a magnetic force is felt. Fish and turtles may find their way back to their breeding grounds by remembering the smell of the water.
1. The question placed at the beginning of the text is to _____.| A．surprise the readers |
| B．serve as the theme |
| C．introduce the topic |
| D．express a puzzlement |
| A．Their round-trip takes about a month. |
| B．They settle in the new places forever. |
| C．They fly back after they lay eggs. |
| D．Young monarch butterflies return north. |
| A．find food | B．lay eggs | C．leave their young | D．find their mates |
| A．how animals find their ways |
| B．where animals go for winter |
| C．when to migrate |
| D．why migration happens |
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【推荐1】The smilodon (剑齿虎) died out probably about ten thousand years ago. Although it is also known as the saber-toothed tiger, it was not a close relative of the modern tiger. The more scientists study the two big cats, the more differences they find.
Tigers are not sociable animals. They generally travel by themselves. The smilodon, on the other hand, probably lived in groups. Tigers run fast while hunting their prey. But the smilodon, with much shorter tails than today’s tigers, did not have the balance to run at top speeds. It probably caught its prey by hiding quietly until an animal came near.
Another main difference between today’s tiger and the smilodon is the size of the smilodon’s teeth. It is known as a saber-toothed cat because of two huge teeth that grew from the top of its jaw(颌). These teeth grew up to nearly 18 cm long and were easily broken and damaged. The smilodon probably used the teeth to bite into soft parts of its prey’s body, such as its stomach. A modern tiger’s teeth are much smaller, but they are stronger.
The smilodon lived in North and South America from about two million years ago until about ten thousand years ago. Tigers, of course, still exist today and live in eastern and southeastern Asia. No one knows for sure why the smilodon disappeared.
1. Why does the smilodon run slower than tigers?| A．Because of their big body. | B．Because of their shorter tail. |
| C．Because of their huge teeth. | D．Because of their living habits. |
| A．No exact reason found. | B．Human activities. | C．The changes of living places. | D．Natural disasters. |
| A．The smilodon died out about 10,000 years ago. |
| B．The smilodon was a relative to modern tigers. |
| C．Modern tigers have more chances to get prey. |
| D．People have known the importance of protecting tigers. |
| A．Why the smilodon died out. | B．The study of the smilodon. |
| C．How to protect modern tigers. | D．The smilodon and the tiger. |
【推荐2】A New Zealand council has announced a month-long road closure in order to allow a sea lion and her pup to reach the ocean safely.
John Wilson Ocean Drive in Dunedin will be closed after the New Zealand sea lions made their home at a nearby golf course and started "regularly crossing the road to get to the beach," according to a Facebook post from Dunedin City Council.
"You can still visit the area on foot or by bicycle, but please give the sea lions lots of space," continued the post.
Locals applauded the decision, and one even called for the closure to be made permanent.
"No dogs should be on the beach, either," wrote Gaylene Smith. "We need to protect our beautiful sea life."
Dogs are known to attack sea lions, and Chisholm Links Golf Course, where the sea lions have made their home, also posted advice to dog walkers in a Facebook update.
"We're lucky to have sea lions on our coastline and we need to share the space with them, as this is what makes our coastline so unique!" wrote the course on Facebook.
The council went on to explain that New Zealand sea lions are endangered, and are one of the world's rarest species of sea lion.
There are an estimated 12,000 New Zealand sea lions left, according to the Department of Conservation. Under local law, anyone who kills a sea lion could face up to two years in prison or a fine of up to NZ$250,000(US$178,000).
1. What decision has the Dunedin City Council made?| A．Closing an ocean drive for a month. | B．Forbidding entry into a golf course. |
| C．Forbidding walking dogs outside. | D．Closing the nearby beach temporarily. |
| A．By informing on TV. | B．By sending out notices. |
| C．By posting on Facebook. | D．By advertising in a newspaper. |
| A．Doubtful. | B．Supportive. | C．Uncaring. | D．Critical. |
| A．They are afraid of humans. | B．They are a common species. |
| C．They are being killed by dogs. | D．They are under legal protection. |
【推荐3】In October, the wildlife group of Himachal Pradesh reintroduced bred-in-captivity (圈养的) Cheer Pheasants (彩雉) into the wild to increase the falling population of this endangered bird.
It is the first attempt of its kind in India. Already, the HP wildlife group is considering the experiment a success. “Out of the 18 birds set free past October-six adults and 12 young ones-11 are still surviving,” says Dr Savita, Chief Wildlife Warden, HP. “According to international standards, even if 20 percent survive for at least a year, the experiment is considered successful.” The birds have been in the wild for eight months now, still four months short of the critical one year period. But having survived the cold winters, survival now should relatively be a walk in the park for these birds.
Reintroduction of any species into the wild requires painstaking efforts, and this experiment is no exception. The first step of the experiment was setting up a conservation breeding facility (繁殖设施) in Chail. The next step was their pairing. “Before the pairing, the genetic analysis was carried out,” says Dr Savita. “Besides, they were often screened for diseases and infections (感染) before they were set free.” Even one diseased bird could infect the entire population in the habitat.
Eventually, three pairs and their 12 chicks were chosen for a flight into the wild. The site chosen for their release (放飞) was a small hill in village Seri. Throwing them straight into the deep end could have proved a disaster, so soft-release was planned. For a month, the birds were kept in-three enclosed pens at the release site. Each pen mirrored their habitat with branches and bushes inside.
A month later, they were allowed to move out to live the life they were actually supposed to. The surviving 11 birds were closely tracked and they seem to have adapted well to the new surroundings. In another four months, the hill in village Seri could become a striking place on the wildlife map.
1. Which of the following best describes “a walk in the park” underlined in paragraph 2?| A．Alarming. | B．Meaningful. | C．Challenging. | D．Easy |
| A．They lived in the park for some time. |
| B．They suffered from disasters. |
| C．They learned to fit in with the wild life. |
| D．They were examined on a daily basis. |
| A．Returning to the Wild |
| B．Saving the Wild Birds |
| C．A Soft Release of Birds |
| D．A Successful Bird Research |
A． | B． | C． | D． |
【推荐1】How would you like to sleep with one half your brain asleep and the other half awake? Dolphins sleep this way. Recently, scientists at Indiana State University have discovered that ducks sleep this way too. They found that ducks sleep half awake so they can rest and watch for danger at the same time.
After putting their ducks in a row and videotaping them, some researchers found ducks on the end of each row spent more time asleep with one eye open, apparently looking for predators.
“The more the ducks felt threatened, the more they slept with one eye open,” said lead author Niels C. Rattenborg. “When they sleep at the edge of a group, they tend to realize greater danger, so they spend more time sleeping with one half of their brain. Ducks with one eye open were still awake enough to detect predators,” said the authors of the study, which appears today in the journal Nature.
The researchers studied four groups of four ducks that were held in plastic boxes. These ducks were arranged in a row. Ducks on the end were found to sleep with one eye open 31.8 percent of the time, compared to 12.4 percent of the time for ducks in the central position.
Also, ducks in the central position did not open one eye more than the others, while ducks on each end kept the eye open 86.2 percent of the time. Brain wave readings of the ducks showed that the half of the brain receiving signals from the closed eye indicated that half of the brain was sleeping. Signals from the half of the brain receiving signals from the open eye showed a state between fully awake and asleep.
1. It was discovered that .| A．ducks can sleep half awake |
| B．most people would like to be half asleep |
| C．dolphins can not sleep half awake |
| D．ducks have different sleeping habits from each other |
| A．human beings who look after and feed ducks |
| B．animals that hunt, kill and eat other animals |
| C．scientists who do research work on animals |
| D．animals that are likely to be friends with ducks |
| A．they are looking for food |
| B．they want to enjoy the scenery |
| C．they are unique in their sleeping habit |
| D．they are watching out for danger |
| A．Ducks on the northern end of a row would keep their eye facing the south open. |
| B．Ducks with less sense of duty usually choose to stay in the center of a row. |
| C．A video tape recorder was the only device used in the experiment. |
| D．Ducks with one eye open at the edge can still enjoy a certain degree of sleep. |
【推荐2】When talking about colds, maybe some people say it is very common. During the cold winter days, many people will complain the cold winter makes them catch a cold, and what they feel upset are not only the headache, cough but also the runny nose. It is so embarrassing when they forget to take a handkerchief or tissue along with them.
Want to stay away from colds? Put on a happy face.
Compared to unhappy people, those who are cheerful and relaxed are less likely to suffer from colds, according to a new study. It’s possible that being happy helps the body fight illnesses, say the researchers from New York University.
“It seems that positive(积极的) feelings may reduce(减少) the danger of illness,” said the study’s chief researcher Sheldon Cohen.
In an earlier study, Cohen found that people who were cheerful and lively caught coughs and colds less often. People who showed feelings were also less likely to tell their doctors that they felt ill.
In this study, Cohen has interviewed 193 adults every day for two weeks. During the interviews, the people told researchers that they were given colds by doctors and had to stay alone in a room for six days.
The results showed that everyone in the study was equally(相等地) likely to get ill. But for people who said they felt happy during the research period, their illness are less serious and lasted for a shorter time.
Cohen believes that when people experience positive feelings, their body may produce a chemical that helps fight illness and disease. So if you are worried about your health, look on the brighter side more often.
1. The underline part in Paragraph 5 is probably means ________.| A．sad | B．bad-tempered | C．thoughtful | D．outgoing |
| A．People who felt happy never got ill. |
| B．People’s feelings didn’t influence their health. |
| C．People with good feelings became ill more easily. |
| D．People with positive feelings had less serious illnesses. |
| A．Eating. | B．Laughing. | C．Crying. | D．Sleeping. |
| A．Smiles can fight colds | B．Cause of colds found |
| C．The danger of colds | D．How people get sick |
【推荐3】My wife and I have always had a non-negotiable when looking for a place to rent: a gas stove. We love cooking together, and countless food shows have impressed upon us that there is nothing more essential to a tasty meal than a flame.
Then came the shift of work forcing us to move into a new apartment with an induction cooker. Past encounters with the slow and inconsistent heating elements of early electric stoves had soured us to the idea of cooking with electricity, but it took only a couple of days for us to realize that our new induction cooker was far superior: Water boiled at lightning speed; I could set a timer and walk away knowing the heat would automatically turn off.
Our belated switch to induction came amid a rise of horrifying stories about the health and climate risks of gas stoves. Studies have found cooking with gas is like having secondhand smoke in the kitchen. Worse still, the primary ingredient that fuels gas stoves are methane, a greenhouse gas 80 times more harmful to the environment than carbon dioxide. That’s why I finally quit using gas stoves and abandoned my prior conviction that I could never live in a home without one.
Don’t get me wrong—there’s still a place for flame, and there’s a reason why barbecued—food is so delicious. Barbecuing food imparts special flavour that you can’t experience with an electric cooker. But dishes that truly require cooking over an open flame are the exception, not the rule.
Changing the fundamentals of our lives is hard. But just as we have stopped commuting by horse, or have replaced a coal fireplace with central heating, it’s time to move gas out of our kitchens. Some might be horrified. The rest of us, though, can step calmly into the future. Hopefully the governments, too, will soon smell the gas.
1. How did the author feel about cooking with early electric stoves?| A．Unpleasant. | B．Concerned. | C．Panicky. | D．Stressed. |
| A．The author regrets giving up gas stoves. | B．Barbecued food is tastier and healthier. |
| C．It is a common practice to cook outdoors. | D．Gas stoves still have a role to play. |
| A．Be open to changes. | B．Be brave in the face of uncertainty. |
| C．The old should give way to the new. | D．Governments should be gas advocates. |
| A．Barbecue: Tasty or Risky | B．A New “Flame” Has Come |
| C．Gas Stoves: To Leave or to Stay | D．Electricity Has Taken the Lead |
【推荐1】Do you completely understand your teenagers who are between 13 to 19? They may live a happy and meaningful life on condition that you know what changes they are undergoing.
The teenage life is full of happiness, sadness enjoyment and it can he interesting too. This is because in the teenage life a teenager is subjected to physical growth, and hormonal changes. They may be in a stage of conflict like undergoing puppy love. This is only a normal part of life.
Teenagers should enjoy life by making friends with peers in healthy activities such as camping, picnic, swimming and so on. Through friends, a teenager learns to joke, laugh and play to release stress and tension. By making friends, the teenager learns to sweeten his or her joys and even eases the bitterness of life's downtime.
Many teenagers are very conscious of their physical outlook. It is at this part of their life that beauty strikes as the main self-image. They love to follow up with the latest trends for dressing and hairstyle. Some girls ang Boys. go on a crash diet to slim down in order to look attractive. However, making up is not a must for their good image.
Parents tend to play a role in a teenager's life. They like to control their freedom and have a say on what the teenagers do. Therefore, teenagers have cases of disagreements, disputes, quarrels and even runaways from homes among some teenage girls. To avoid this, parents should be more in their teenager's shoes.
There are also negative problems that may pop out during a teenage life. Some teenagers are easily affected by the mass media and the people around them. They may be involved in violent behavior, drags taking, smoking, drinking and so on. Others tend to let off their anger by destroying public property. There will be more harm than good if nothing is done.
1. Why are teenagers’ lives full of ups and downs?| A．They usually undergo puppy love. |
| B．They have a variable character. |
| C．They are too young and lack experience of life. |
| D．They are experiencing personal body changes. |
| A．They eat whatever they like. |
| B．They prefer doing making up. |
| C．They follow up fashion trends. |
| D．They learn how to- do withhairstyle. |
| A．Parents often misunderstand their teenagers. |
| B．Parents don’t know what their teenagers need. |
| C．Parents should wear their teenagers' shoes more often. |
| D．Parents should think more in their teenagers' position. |
| A．To recommend parents to show kindness to teenagers. |
| B．To tell parents to focus on the changes teenagers undergo. |
| C．To encourage parents to follow up with the latest trends. |
| D．To advise parents to offer proper guidance to teenagers. |
【推荐2】Imagine there being a business that regularly takes huge quantities of your own products worth millions of pounds and burns them up. Your stock literally goes up in smoke. It sounds crazy, but the practice is common for some of the world’s biggest clothing manufacturers. They argue that it is the most cost-effective way of maintaining their brand's exclusivity (独特性).
The clothes that are burned are those that do not sell at a high enough price. Rather than watch them go on sale, the companies would set fire to them and regain a small amount of energy.
Nobody knows exactly how much unsold stock is burnt annually by those fashion houses, but burning clothes has various negative impacts on the environment. For example burning clothes made from artificial fibers may release plastic microfibers into the atmosphere, which worsens global warming. A U.K. parliamentary committee report on sustainability and the fashion industry advises the government to ban the burning of unsold stock if it can be reused or recycled.
Actually, there are other approaches. What if those companies had a section tasked with taking back unsold clothes, redesigning them into new products, and shipping out the new products to the market once again?
There is also now an opportunity to focus on biodegradable (可生物降解的) fabrics. Clothes that break down faster might not have to be burned. They would also appeal to those who care about the environmental impact of their own wardrobes.
Additionally, we have an over-production problem. According to the World Bank, while clothing sales have risen steadily since 2000, clothing utilization has fallen at roughly the same rate. For every extra T-shirt that is sold, it will be worn roughly half as much as it would have been 20 years ago. That means better forecasting market trends would in theory result in less waste.
Burning clothes won't happen simply through fashion firms. The scale of fashion production has to change. And it's important to recognize that these consumer-focused brands will only go where the market takes them. If protecting the environment really matters to the public, they have to make clear that they want more sustainable clothing in the first place. Without consumers demanding that, it won't change.
1. Paragraph Three mainly talks about _______.| A．how important the U.K. parliamentary committee report is |
| B．why fashion firms should end burning unsold stock |
| C．why fashion firms burn unsold clothes in large numbers every year |
| D．how artificial fabrics will contribute to global warming |
| A．how long clothing lasts | B．how well clothing sells |
| C．how often clothing is used | D．how clothing is designed |
| A．Redesigning and making them into new clothes |
| B．Making consumers feel better about their purchases |
| C．Conducting research on market demand before production |
| D．Making clothes out of environmentally-friendly materials |
| A．Consumers play a key role in stopping burning clothes. |
| B．Burning clothes is a better option for every fashion firm. |
| C．The secret that some fashion firms burn clothes is well kept. |
| D．Today's clothes are better than those two decades ago. |
【推荐3】Tea, the most typical of English drinks, is a relative latecomer to British shores. Although the custom of drinking tea dates back to the third millennium (一千年) BC in China, it was not until the mid-17th century that the drink first appeared in England. It was the Portuguese and Dutch traders who first imported tea to Europe, reaching the Continent by the way of Venice around 1560, with regular shipments by 1610.
Curiously, it was the London coffee houses that were responsible for introducing tea to England. One of the first coffee house merchants to offer tea was Thomas Garway. He sold both liquid and dry tea to the public as early as 1657. Three years later he issued a broadsheet advertising tea at £6 to £10 per pound, touting ( 兜 售 ) its virtues at “making the body active and lusty (健壮的)”, and “preserving perfect health until extreme old age”.
Tea gained popularity quickly in the coffee houses, and by 1700 over 500 coffee houses sold it. This distressed the pub owners, as tea cut their sales of beer, and it was bad news for the government, who depended upon a steady stream of revenue (税收) from taxes on liquor sales. By 1750 tea had become the favoured drink of Britain’s lower classes.
A 1676 act taxed tea and required coffee house operators to apply for a license. This was just the start of government attempts to control, or at least, to profit from the popularity of tea in Britain. By the mid-18th century the duty on tea had reached a ridiculous 119 percent. This heavy taxation had the effect of creating a whole new industry — tea smuggling ( 走 私 ). Ships from Holland and Scandinavia brought tea to the British coast, then stood offshore while smugglers met them and unloaded the precious cargo in small vessels. The smugglers, often local fishermen, secretly moved the tea inland through underground passages and hidden paths to special hiding places. One of the best hiding places was in the local church!
Even smuggled tea was expensive, however, and therefore extremely profitable, so many smugglers began to adulterate (掺假) the tea with other substances, such as willow and sloe leaves. Used tea leaves were also redried and added to fresh leaves.
Finally, in 1784 William Pitt the Younger introduced the Commutation Act, which dropped the tax on tea from 119% to 12.5%, effectively ending smuggling. Adulteration remained a problem, though, until the Food and Drug Act of 1875 brought in severe punishment for the practice.
1. According to the passage, tea drinking _______.| A．is the favorite pastime of the Dutch |
| B．is an important British tradition |
| C．was well-received by the Portuguese centuries ago |
| D．could be found everywhere in the world in 1560 |
| A．Coffee house owners. | B．Wine sellers. |
| C．Britain’s lower classes. | D．Smugglers. |
| A．Churches provided convenience for smuggling. |
| B．Fishermen and farmers contributed a lot to tea industry. |
| C．Underground passages and boats were ideal hiding places for tea. |
| D．The government encouraged tea smuggling for taxes on tea. |
| A．By passing an act related to a tax rise. |
| B．By imposing mild punishment. |
| C．By punishing those who sold fake tea. |
| D．By mixing redried used leaves with fresh tea leaves. |
【推荐1】Myth: If you cut your hair, it will grow long faster.
Truth: That’s not true. “Your hair isn’t like a lawn or a rosebush, where cutting can stimulate fresh growth,” says Phillip Kingsley. The length of your hair is genetically determined. When it reaches a certain length, it stops growing. When you clear up the dead split ends, this makes your hair look healthier, but not necessarily longer.
Myth: If you skip meals, you lose weight fast.
Truth: There’s no truth in this advice. Not only will you not lose weight by starving yourself, but according to Carol Ann Rinzler, this may actually cause you to gain weight. Rinzler reasons that missing a meal causes your metabolism (新陈代谢) to slow down so that you burn food more slowly. This only makes you feel hungrier and by the time you finally do reach the table you will probably eat more food. Strange as it may seem, studies show that eating several small meals and snacks throughout the day is a more healthy way to lose pounds.
Myth: If you swallow goon, it will stay inside your stomach for seven years.
Truth: Actually, it takes just a few days for gum to make its exit - not seven years, says Nei Izenberg, M. D., editor of Kids Health organization. But because gum is made of the same thing as rubber, it cannot be fully digested in your stomach — so if you gum up the works on a regular basis, might find yourself in a stick situation.
Myth: The best way to stop a nosebleed is to lift your head back.
Truth: Now that’s bad advice. Bloody noses are caused by broken blood vessels, so while lifting your head back might stop the fluid from rushing out of your nose, it won’t stop the bleeding; you’ll just end up swallowing lots of blood. Your best bet? “Rest quietly. Don’t poke or pick, and the blood will naturally clot (凝结) within a minute or two,” suggests Dr. Izenberg.
1. The length of your hair is determined by ________.| A．cutting it often | B．your gene |
| C．the food you eat | D．clearing up the dead split ends |
| A．help you lose weight fast | B．help you lose weight slowly |
| C．cause you to become fatter | D．make you burn food more quickly |
| A．Gum cannot be fully digested in the stomach. |
| B．Gum can stay inside your stomach for seven years if you swallow it. |
| C．Gun can leave your stomach after you swallow it a few days later. |
| D．If you often swallow gum, you might find yourself in a sticky situation. |
| A．A large sum of money. | B．An impossible action. |
| C．High expectation. | D．A wise solution. |
【推荐2】What will man be like in the future—in 5000 or even 50,000 years from now? We can only make guesses, of course, but we can be sure that he will be different from what he is today, for man is slowly changing all the time.
Let us take an obvious example. Man, even five hundred years ago, was shorter than he is today. Now, on average, men are about three inches taller. Five hundred years is a relatively short period of time, so we may assume that man will continue to grow taller. Again, in the modern world we use our brains a great deal. Even so, we still make use of only about 20% of the brain's capacity. As time goes on, however, we shall have to use our brains more and more, and eventually we shall need larger ones! This is likely to bring about a physical change too: the head, in particular the forehead, will grow larger.
Nowadays our eyes are in constant use. In fact, we use them so much that very often they become weaker and we have to wear glasses. But over a very long period of time it is likely that man's eyes will grow stronger.
On the other hand, we tend to make less use of our arms and legs. These, as a result, are likely to grow weaker. At the same time, however, our fingers will grow more sensitive because they are used a great deal in modern life.
But what about hair? This will probably disappear from the body altogether in course of time because it does not serve a useful purpose any longer. In the future, then, both sexes are likely to be bald.
Perhaps all this gives the impression that future man will not be a very attractive creature to look at! This may well be true. All the same, in spite of all these changes, future man will still have a lot in common with us. He will still be a human being with thoughts and emotions similar to our own.
1. The change in man's size of forehead will probably be because _____.| A．he makes use only 20% of the brain's capacity |
| B．his brain has grown larger over the past centuries |
| C．the other 80% of his brain will grow in due time |
| D．he will use his brain more and more as time goes on |
| A．He will be hairless because hair is no longer useful. |
| B．He will have smaller eyes and will wear better glasses. |
| C．His fingers will grow weaker because he won't have to make use of them. |
| D．He will think and feel in a different way. |
| A．human beings will become less attractive in the future |
| B．less use of a bodily organ may lead to its degeneration |
| C．human beings hope for a change in the future life |
| D．future life is always predictable |
【推荐3】Food sometimes gets poisoned with harmful things. A person who eats such food can get an illness called food poisoning. Food poisoning is usually not serious, but some types are deadly. The symptoms of food poisoning usually begin within hours of eating the poisoned food. Fever is one of the most common symptoms.
Certain microorganisms (微生物)cause most types of food poisoning. Bacteria and other microorganisms can poison eggs, meat, vegetables, and many other foods. After entering the body, these tiny living things release poisons that make people sick.
Some chemicals can also cause food poisoning. They are often added to food while it is being grown, processed, or prepared. For example, many farmers spray chemicals on crops to kill weeds and insects. Some people may have a bad reaction to those chemicals when they eat the crops.
Some plants and animals contain natural poisons that are harmful to people. These include certain kinds of seafood, grains, nuts, seeds, beans, and mushrooms. ,
When people handle food properly, the risk of food poisoning is very small. Microorganisms multiply rapidly in dirty places and in warm temperatures. This means that people should never touch food with dirty hands or put food on unwashed surfaces. Food should be kept in a refrigerator to stop microorganisms from growing. Meat needs to be cooked thoroughly to kill any dangerous microorganisms. People should also wash food covered with chemicals before eating it. Finally, people should not eat wild mushrooms or other foods that grow in the wild. Some of these foods may contain natural materials that are poisonous to humans. In addition, some types of fish can be poisonous.
Most people recover from food poisoning after a few days of resting and drinking extra water. If people eat natural poisons, they must go to the hospital right away to have their stomachs emptied.
1. What is one of the most common symptoms of food poisoning?| A．Headache. | B．Nose bleed. |
| C．Fever. | D．Stomachache. |
| A．Farmers spray chemicals on crops to make people sick. |
| B．The danger of food poisoning is very small if people handle food improperly. |
| C．Some mushrooms contain poisons which can kill weeds and insects. |
| D．Food poisoning can be caused by certain microorganisms. |
| A．reproduce | B．overcome |
| C．deliver | D．digest |
| A．He has a bad reaction to chemicals on crops. |
| B．He touches food with dirty hands. |
| C．He eats wild mushrooms containing natural poisons. |
| D．He eats meat which wasn't cooked thoroughly. |
