Some plants get so hungry they eat flies, and small frogs. What’s more amazing is that these plants occur naturally (in special environments) in every state. In fact, they’re found on every continent except Antarctica.
You’ve probably seen a Venus’ flytrap. It’s often sold in museum gift stores, department stores, and even supermarkets. A small plant, it grows 6 to 8 inches tall in a container. At the end of its stalks(茎)are leaves that act like traps. Inside each trap is a lining of tiny hairs. When an insect lands on them, the traps suddenly shut. Over the course of a week or so, the plant feeds on its catch.
The Venus’ flytrap is just one of more than 500 species of meat-eating plants, says Barry Meyers-Rice, the editor of the International Carnivorous Plant Society’s Newsletter. He states despite any science-fiction stories you might have read, no meat-eating plant does any danger to humans.
Dr. Meyers-Rice says a plant is meat-eating, only if it does all four of the following: “attract, kill, digest, and absorb” some form of insects. Meat-eating plants look and act like other green plants—well, most of the time.
All green plants make sugar to produce food. What makes meat-eating plants different is their special leaves, which need insects for one reason: nitrogen(氮). Nitrogen is a nutrient(营养物质) that they can’t obtain any other way. Why?
Almost all green plants on our planet get nitrogen from the soil. Meat-eating plants can’t. They live in places where nutrients are hard or almost impossible to get from the soil because of its acidity .So they’ve come to rely on getting nitrogen from insects and small animals. In fact, nutrient-rich soil is poisonous to meat-eating plants. Never fertilize(施肥) them! But don’t worry, either, if they never seem to catch any insects. They can survive, but they’ll grow very slowly.According to the passage, Venus flytrap .
| A．is a small plant which grows in a container |
| B．is a kind of plant which gets hungry easily |
| C．can trap and feed on some form of insects |
| D．grows 6-8 inches tall |
From the passage, we can infer that .
| A．meat-eating plants are found nowhere else except Antarctica |
| B．All green plants get nitrogen from the soil |
| C．meat-eating plants endanger humans in science-fiction stories |
| D．The nutrient-poor soil is beneficial to meat-eating plants |
Meat-eating plants grow very slowly, .
| A．so you’d better fertilize them |
| B．probably because the supply of nitrogen is cut off |
| C．simply because they can’t absorb nitrogen from the soil |
| D．and then they will die slowly |
Which of the following is true?
| A．Meat-eating plants look and act like other green plants. |
| B．It’ hard to get nutrients in the soil when acidity is high. |
| C．Venus flytrap eats flies to get nutrient from them. |
| D．Green plants make sugar at night. |
People who are outdoors in cold weather should avoid actions like suddenly lifting a heavy basket full of snow. Even walking through heavy, wet snow can strain a person’s heart.
Many people aren’t conditioned to the physical stress of outdoor activities and don’t know the dangers of being outdoors in cold weather. Those who like winter sports can suffer accidental hypothermia if they don’t make certain preparations.
Hypothermia means the body temperature has fallen below normal. It occurs when your body can’t produce enough energy to keep the internal (内部的) body temperature warm enough. It can kill you. Heart failure causes most deaths in hypothermia.
Children, the elderly and those with heart disease are at special risk. As people age, their ability to keep a normal internal body temperature often decreases. Elderly people can suffer hypothermia without knowing they’re in danger because they can’t notice the cold conditions as quickly as the young.
Besides cold temperatures, high winds, snow and rain can also steal body heat. Wind is especially dangerous because it removes the layer of heated air from around your body. At 30 degrees Fahrenheit in a 20-mile-per-hour wind, the cooling effect is equal to calm air at four degrees. Similarly dampness (湿气) causes the body to lose heat faster than it would at the same temperature in drier conditions.
To keep warm, wear more clothes. This traps air between layers. Also, wear a hat or head scarf. Much of your body’s heat can be lost through your head. Keep your hands and feet warm, too, as they tend to lose heat rapidly.
Don’t drink alcohol before going outdoors or when outside. Alcohol makes you feel warm at first because blood vessels in the skin expand. But heat is then drawn away from the body’s important organs.The underlined word “strain” in Paragraph 1 means ________.
| A．injure | B．warm | C．control | D．burn |
What is implied in the passage about hypothermia?
| A． It means the body temperature falls rapidly. |
| B． Most heart attacks are caused by it. |
| C． It is not as scary as people think. |
| D． It can threaten a person’s life. |
Based on the passage, one of the reasons why the elderly are at special risk of suffering from hypothermia is that _______.
| A． they like exercising outside in cold mornings |
| B． they can’t notice cold conditions if they are not told |
| C． their body temperature is generally lower than young people’s |
| D． their ability to keep a normal internal body temperature is not so good |
What is Paragraph 5 mainly about?
| A． What causes the body to lose heat faster. |
| B． The advantages of drier conditions. |
| C． What else can steal body heat. |
| D． Dangers of high winds. |
Which of the following is NOT a result of drinking alcohol before going outdoors?
| A． Feeling warm at first |
| B． The body’s heat is taken away |
| C． Blood vessels in the skin expand |
| D． The risk of hypothermia is reduced |
Don’t be surprised when strangers talk to you in Canada! You will find that many Canadians will smile at you as they pass in the street, or say something to you like “Hi!” or “How’s it going?” Just reply with something similar. In the UK the reply would be “I’m fine”, but in Canada they say “I’m good”.
In company, when someone is offering you a second helping of food or more wine, if you don’t want any more, use the same expression— “I’m good”. In this case, it means “No, thank you. I’ve had enough”. Most Canadians don't press you to eat more than you want.
In restaurant, your plate will be cleared away almost immediately you have finished eating. When you go into a shop or store, the shop assistant asks you how you are or if they can help you, it is their way of being friendly and making conversation with the customers.
Canadians eat early and go home early. When you are invited to a Canadian’s home, you may be asked to arrive at 5:30 pm or 6 pm. But guests in Europe don’t expect to arrive until 7:30 pm or 8 pm. Remember to take off your shoes and leave them inside the door without being asked. It’s not a religious custom, but it’s practical. In winter, there can be a lot of snow and dirt on your shoes, once you are in the warm house it melts and falls off, making a mess. Canadians tend to have light colored carpets or hardwood floors.
If you’re invited for dinner, it will be a full sit- down meal. Meat is usually barbecued in the freezing cold of winter. Do take something with you, like a bottle of wine. Arrive on time and don’t stay over 10 pm.Which of the following statements is NOT true according to the passage?
| A． “I’m good” can mean you do not need more food in Canada. |
| B． In Canada, you will meet strangers in the street saying “Hi” to you. |
| C． In a Canadian restaurant, the plates will stay at the table until you leave. |
| D． Canadians usually say “I’m good” to answer the greeting of “How’s it going?” |
If you are invited for dinner in your Canadian friend’s home, ________.
| A． you will have a full sit-down meal |
| B． you don’t have to bring any gift for the host |
| C． you are expected to arrive at 7:30 or 8 pm |
| D． you don’t have to take off your shoes when you enter the room |
When a Canadian shop assistant says “How are you?” to you, it suggests that _______.
| A． they hope to make friends with you |
| B． they want to ask you for help |
| C． they are very friendly to customers |
| D． they are your good friends |
What can we learn from the passage?
| A． Canadians like dark colored carpets. |
| B． In Canada, meat will not be barbecued even in the cold winter. |
| C． You will always be asked to eat more food than you want in Canada. |
| D． It is usually rude to stay over 10 pm in your Canadian friend’s home. |
What would be the best title for this passage?
| A． Some customs in Canada |
| B． Dinner party rules in Canada |
| C． Studying in Canada |
| D． Doing business in Canada |
A long time ago, before there was any money (coins or paper money), people got the things that they needed by trading or exchanging. Salt was one of the first items used to exchange for other items. Later, some of the common things that were used for exchanging were tea leaves, shells, feathers, animal teeth, tobacco, and blankets. Around 3000 BC, barley, a type of grain, was used for exchanging.
The world’s first metal money was developed by the Sumerians who melted silver into small bars all weighing the same. This was around 1000 BC. About three hundred years later, people started using coins as official money.
Around 640 BC, people in the ancient kingdom of Lydia ( which was in Turkey) created special coins of exact with and purity (纯度). They were made of gold and silver and were stamped with a lion’s head.
Later, other empires such as Greece, Persia, and Rome adopted the concept of coins and started developing their own in many different shapes and different metals.
Around the year 1000, the Chinese started using paper money. The Chinese were the first to use paper money. The Europeans discovered this thanks to Marco Polo who went to China in 1295. the Chinese had different values for the paper notes which were made by the Chinese government.
Around 1661, Sweden became the first European country to make paper money. Until 1850, the Spanish dollar was the coin most widely used throughout the world.What is the best title for this passage?
| A． The history of money |
| B． How people traded in the past |
| C． The invention of paper money |
| D． The use of coins around the world |
We learn that before coins and paper money were used, _____.
| A． barley had always been used for exchanging |
| B． only a few people knew how to trade with others |
| C． salt was the most widely used item for exchanging |
| D． many kinds of things were used for exchanging |
According to the passage, when did people start using coins as official money?
A. Around 1300 BC. B. Around 1000 BC.
C. Around 700 BC. D. Around 640 BC.The underlined word “adopted” in Paragraph 4 probably means “____”.
| A． replaced | B． changed |
| C． accepted | D． invented |
Which of the following countries first started to use paper money?
| A．Spain | B．China | C．Sweden | D．Lydia |
Many years ago my student asked me the question, “Mrs. Kindred, why do you teach?” Without taking time to reflect, I answered, “Because someday I might say something that might make a difference in someone’s life.” Even though I was sincere, that wasn’t a very good answer and my student didn’t let it slide.
“Let me get this straight,” he said, “You went to college for four years so you could come here every day because you have the hope that someday you might say something that will influence someone?” He shook his head as if I were crazy and walked away looking confused. I’m one of those people who look back and wish they had said something smart or witty, or swift.
Even though that particular student might no longer wonder why I teach, there are days when I wonder. On those days, I remind myself of the real reasons I teach:
It’s in my blood. My mother was my most influential teacher, and she was a 6th grade reading teacher until her death in 1990. She instilled(逐渐灌输) in me a love of reading and the knowledge that education opens doors.
Teaching is a way to make a difference. If you throw a stone in a pond the ripples go on and on until they reach the shore. You can’t have ripples without a “stone.” Good teachers throw stones that make a positive difference, and that’s what I strive to do.
I genuinely love teenagers.
I want to share with others what I know and what I have learned through the years. Life is full of ups and downs, and if I can help students avoid some potholes on the road of life, I want to do so. If they’ll allow me to celebrate their victories with them, I want to do too.
Teaching isn’t for everyone, but I know I made the right career choice.What do you think of the writer?
| A．Stupid. | B．Honest. | C．Conservative. | D．Polite. |
According to the text, which of the following is NOT true?
| A．The writer’s mother has the greatest influence on her. |
| B．The writer’s answer made the student confused. |
| C．In the writer’s opinion, some people in the world are unfit to teach. |
| D．The writer annoyed the student who asked the question. |
Why did the student continue to ask the question about the writer’s being a teacher?
| A．Because he thought her answer was unbelievable. |
| B．Because the writer was insincere. |
| C．Because the student was naughty. |
| D．Because the answer was difficult to understand. |
What’s the main idea of the text?
| A．A student’s silly question. | B．A good teacher who likes students. |
| C．A confused student. | D．The reason why I teach. |
We can infer from the text that _________.
| A．the writer was also a good teacher in school |
| B．the writer often plays with her students beside a pond |
| C．the writer devotes herself to teaching and her students |
| D．the writer often accompanies the students on their way home |
Napoleon Bonaparte died on May 5, 1821, on the island of St. Helena off the coast of Africa. He was 51 years old at the time. When doctors examined Napoleon’s body, they said that the former emperor of France had died from cancer of the stomach. That was the cause of death recorded in the official report. However, other doctors disagreed. One doctor who was present during the examination of the body said that Napoleon died of hepatitis. Other historians and medical experts have suggested that Napoleon died of syphilis, tuberculosis, or perhaps malaria. Now, after careful research, a British chemist thinks that Napoleon might have been poisoned -- not by a person, but by his wallpaper.
Napoleon was sent to the island of St. Helena in 1815 after he lost the battle of Waterloo. He was a prisoner on the island. Although he had servants to attend to him, he had to live in one small building. St. Helena is a very wet island, so the walls of the building were always covered with mold. Napoleon became ill from spending too much time inside his house. Almost constantly he had a fever, chills, and felt sick to his stomach. He often felt pain in his shoulders and in his side. His skin turned yellow. He got frequent headaches, and he would become dizzy and vomit(吐). None of the medicine that the doctors gave Napoleon seemed to help. They were not sure what was the matter. Finally, Napoleon was too weak to leave the house. One night, while he was sleeping, he went into a coma and died.
Many doctors who later reviewed the reports of Napoleon’s illness found that the symptoms(症状) did not show a man who suffered from stomach cancer. It seemed obvious that Napoleon had died from some other cause. In 1961, a Swedish doctor examined some of Napoleon’s hair and found a high level of arsenic, a chemical poison. Was Napoleon murdered? It is doubtful. Arsenic was used in many types of medicine during Napoleon’s time, so he might have taken the arsenic as a cure for his illness. Then, in 1982, Dr. David Jones from England began to look into the mystery and suggested that Napoleon might have breathed in arsenic which was in the air of his house. In the 1700s and 1800s, arsenic was used to make a kind of green paint used on cloth and wallpaper. If the paint was used on a wet wall, the arsenic would go into the air. A person in the room might breathe that air. After studying the wallpaper in the room where Napoleon died, Dr. Jones found high levels of arsenic in the green paint on the walls.Why did Napoleon live on St. Helena?
| A．He owned the island. | B．He was a prisoner there. |
| C．His family lived there. | D．He liked the island. |
The official report said that Napoleon died of____________.
| A．cancer | B．a coma | C． mold | D．poison |
Napoleon suffered from the following symptoms except __________.
A. chills B. fever C dizziness D. bleedingAccording to Dr. Jones, how did the arsenic probably get into Napoleon’s body?
| A．He drank it.. | B．He touched it. | C．He breathed it in. | D．He ate it |
The passage says that .
| A．a British doctor thinks he has found the cause of Napoleon’s death |
| B．many doctors have tried to guess the cause of Napoleon's death |
| C．Napoleon could have died from poison |
| D．all of the above |