①Have you ever played with another dog around your dog or played with a different dog when you’re taking a walk? Many dogs don’t like it when they’re not the center of their owners’ attention (关注) . Whether it’s a new baby or the cute little dog next door, there’s a good point that your dog doesn’t want to share your love with anyone else. Some people may think that jealousy is a human-only feeling. But it’s not true.
②A few years ago, researchers at the University of California, San Diego, found that dogs showed jealous actions when their owners showed love to another dog.
③For the study, researchers watched videos of interactions (互动) between 36 dogs and their owners in their homes. Researchers let the owners pay no attention to their dogs but play with a robot dog which looked like a real dog. Owners talked to it sweetly and shared everything with it.
④About 60% of the dogs would touch or push (推) their owners when they were playing with the robot dog. About one-third of the dogs tried to get between the owner and the robot dog and some even barked (大叫) at “the other dog”.
⑤“Our study shows that dogs not only show jealous actions but also try to break up the relationship between the owner and a competitor,” said Professor (教授) Christine Harris, one of the researchers.
⑥So your dog might act differently when he’s trying to get your attention and may be experiencing feelings of jealousy. For example, he may get your attention by licking (舔) you or he may suddenly run into the bathroom to get attention or even to show sadness. So if you have more than one pet, be sure to give them the same attention so that any of them will not feel forgotten.
1. What is the meaning of the word jealousy in the first paragraph?A.难过 | B.伤心 | C.嫉妒 | D.失望 |
A.In a travel magazine. | B.In an advertisement. | C.In a story book. | D.In a newspaper. |
A.Researchers believe that jealousy is a human-only feeling. |
B.Dogs feel jealous only when their owners play with other dogs. |
C.If you have many pets, you should give them same love to make them feel unforgotten. |
D.Researchers study the interactions between 36 robot dogs and their owners in their homes. |
A.①②③; ④⑤; ⑥ | B.①; ②③④⑤; ⑥ | C.①; ②③④; ⑤⑥ | D.①; ②③; ④⑤⑥ |
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Zhalong National Nature Reserve is in Heilongjiang Province in the northeast of China. It is one of the world’s most important wetlands(湿地).
The area offers food and shelter to wildlife.
There are many fish in the wetlands too. Zhalong National Nature Reserve is an importantliving area for the rare red-crowned cranes(丹顶鹤). There are not many red-crowned cranes in the world. Some of them live in Zhalong.
We do a bird count once a year. We are now inviting secondary school students to help.
A.Every year, a lot of tourists go to Zhalong to watch birds. |
B.Animals are people’s friends. |
C.We need more people to help us count and do something to help the birds. |
D.It is a perfect home for different kinds of plants, fish and birds. |
E.We should set up more nature reserves. |
F.Some people want to change the wetlands to make more space for farms and buildings. |
【推荐2】There are about 3,000 dolphins living in ocean parks around the world. People love watching them. But do they miss their home? The dolphin in this picture might be able to help them return to the ocean.
A US company built a life-like robotic dolphin. It acts robotic dolphin and sounds like a real dolphin. It can swim for 10 hours on a single charge (充电). During tests, people can hardly tell the dolphin is a robot and not real.
The company is now bringing these robotic dolphins to the public. It hopes these dolphins will take the place of real dolphins in ocean parks. Besides dolphins, the company wants to create Great White Sharks and some other animals for ocean parks.
In fact, people who want to protect animals are talking more about the influence of keeping wild animals in parks. The animals have to perform (表演) for visitors many times a day, as well as go through training programs. People around the world are doing more to protect wild animals. Parks and circuses (马戏团) in 20 European countries cannot have wild animal shows anymore. Ocean parks in France can no longer have dolphin shows as of Sep 29. Animal rights groups say the move is “a historical victory”.
1. What can we learn about the robotic dolphin?A.It is still under discussion. |
B.It is just like a real dolphin. |
C.It can swim less than 10 hours on a single charge. |
D.It will take the place of real dolphins in the ocean. |
A.make more money | B.do research into animals |
C.keep the ocean park popular | D.help protect wild animals |
A.Create New Inventions | B.Visit Ocean Parks. |
C.Help Dolphins Go Home | D.Watch Animal Shows |
Unluckily, in many parts of the world, man has not found that the third of these points is the most important. Man wants to make money from trees, so he has cut them down in large numbers, only to find that without them he has lost the best friends he had. And also, he is usually too careless to plant and look after new trees. So the forests slowly disappear.
This does not only mean that man will have fewer trees. The results are even worse: for where there are trees, their roots break up soil-make the rain in-and also bind the soil, thus stopping it from being washed away easily; but where there are no trees, the rain falls on hard ground and flows away, causing floods and carrying away the rich top-soil. When all the top-soil is gone, nothing is left but useless desert.
1. The most important points of trees to man is ________.
A.they help him to make money |
B.they give him cool |
C.they give him wood and other things |
D.they help him to stop drought and floods |
A.many trees have been cut down by man |
B.new trees are not well looked after |
C.man has not paid enough attention to planting trees |
D.all the above |
A.roots of trees break up the soil |
B.there are too many rainfalls |
C.strong winds bring a lot of sand |
D.there are no longer trees to keep the rain and protect the top-soil. |
A.Trees and Man. |
B.The Function of Tree Wood. |
C.How do People do with Trees? |
D.The Usage of Tree Roots. |
【推荐1】Hippos (河马) live in Africa. Their sweat (汗) is red. Sometimes they walk a long way to find water. In fact (事实上), hippos walk in the water. They can’t swim.
Hippos love to play in the water in the day. They like to eat plants at night. They never eat meat. They are easy to be angry (生气的).
An adult (成年的) hippo is about 3,000 kg. He can run very fast. But he cannot run a long way. His longest (最长的) tooth is about 60 cm. His open mouth is big. A child can get into it.
Crocodiles (鳄鱼) eat young hippos. But they cannot hurt (伤害) adult hippos. So the mother hippos often go with their children.
1. Hippos can’t ________ in the water.A.run | B.swim | C.walk |
A.3,000 | B.4,000 | C.6,000 |
A.they like their children |
B.crocodiles eat baby hippos |
C.they like to play games with them |
A.Hippos always eat plants in the day. | B.Hippos’ sweat is red. | C.Hippos get angry easily. |
A.how to save hippos in Africa |
B.something interesting about hippos |
C.what food hippos can eat |
【推荐2】
It is said that people now love keeping flat-faced (扁脸的) dogs like French bulldogs as pets, because they are so cute. Some people call these dogs “lazy” because they get sleepy more easily than other dogs during the day. However, according to a recent study, these cute dogs are having a hard time.
Scientists watched 92 family dogs of different kinds while they were sleeping. During the study, the dogs spent about three hours with their owners in the sleep lab. With nothing special to do, the dogs soon fell asleep. At that time, the scientists recorded the dogs’ brain activities with an EEG (脑电图).
The study found that the flat-faced dogs slept more than the other kinds. This is because they don’t get enough sleep at night. Scientists explained that, because of their special head structure, these flat-faced dogs usually have sleep apnea (睡眠呼吸暂停症). During their sleep, they can’t get enough air and may find it difficult to breathe, which makes them repeatedly wake up.
Some French bulldogs may sleep while holding a toy ball in their mouths. Owners may think this is funny. But they’re actually doing it to keep their airways (呼吸道) open so they can breathe more easily.
This, however, is only one of the health problems dogs have because of breeding (培育). According to the website Pet Helpful, a lot of pet dogs are bred based on what people like, such as shorter legs, heavier bodies and larger ears. There is no doubt that bulldog is a victim of it.
Lots of pet lovers are calling for people to respect animals as they are. Breeders must take the health of pets seriously instead of just for cuteness. After all, we are not supposed to build our fun on others’ suffering.
根据材料内容选择最佳答案。1. How does the writer start the passage in Paragraph 1?
A.By listing some facts. | B.By telling a joke. |
C.By asking a question. | D.By making a survey. |
A.It studied 92 French bulldogs. | B.Dogs couldn’t fall asleep in the lab. |
C.Dogs were put into the lab all alone. | D.It recorded dogs’ brain activities with an EEG. |
A.Because it’s funny to do so. | B.Because the ball tastes delicious. |
C.Because the ball can help them breathe. | D.Because their owners tell them to do that. |
A.Someone who looks very cute. |
B.Someone who works in science. |
C.Someone who uses their power to hurt others. |
D.Someone who is hurt because some bad things happen. |
A.People are choosing pets in a healthy way. |
B.People should put health first when breeding pets. |
C.We should stop breeding more cute kinds of dogs. |
D.Only flat-faced dogs face health problems because of breeding. |
【推荐3】Who would win in a competition to memorize numbers, a chimp(猩猩) or a teenager?The teenager? Think again.Scientists have proved that chimps perform better than human beings when it comes to this kind of problem. We may have to rethink what we believe about human memory.
Memory is our ability to learn something, save it and recall it when needed.Our memories are important to our sense of self, our personalities, and our ability to understand the world
Scientists say that there are different types of memory.There is short-term memory and long-term memory.Your short-term memory saves information for a few seconds or a few minutes.For example, the time it takes to compare the prices of a few items(物件)in a store.Long-term memory involves the information you try hard to keep, because it's meaningful to you.(an example is data about family and friends).And then there is visual (视觉的) memory and sound memory.But these are not hard and fast: scientists argue a lot about the nature of memory.
Scientists have also found that people memorize things in different ways.Some memorize better with the help of pictures.Others are helped more by sounds.One thing s for sure.If you can combine different kinds of memory together, you will remember a lot So why not try pictures with English words? At the same time, listen to recordings of the same group of words.This may help when it comes to memorizing it.
Imagination and association can be useful, too.By imagination, scientists mean to picture a word in your mind.Association means relating the word to something you have already known.
1. From Paragraph 1, we can know_________.A.human beings are less clever than chimps |
B.human memory is not as good as before |
C.chimps can memorize numbers better than teenagers |
D.chimps perform better than human beings in many aspects |
A.an hour | B.half an hour | C.a few minutes | D.one second |
A.Why a chimp does better than a teenager. |
B.How to memorize things quickly and well. |
C.Different kinds of memory and several good ways to memorize things. |
D.Imagination and association are useful in memorizing things. |
【推荐1】Welcome to your future life !
You get up in the morning and look into the mirror. You look young. In 2035, many people can live to be about 150 years old. So at the age of 40, you’re not old at all. And your parents look the same young as you!
You say to your shirt, “Turn red.” It changes from blue to red. In 2035, “smart clothes” can change the color or style as you like.
You walk into the kitchen. You pick up the milk , but you hear the voice, “You shouldn’t drink that!”Your fridge remembers the information about the milk. It knows that the milk is not fresh. In 2035, every household appliance (家电) is like your secretary (秘书).
It’s time to go to work. In 2035, cars drive themselves. Just tell your “smart car”where to go. On the way, you can call a friend with your watch. Such “smart technology(科技)” is all around you.
So will all these things come true? “All these will come true, even better,” says a scientist.
I couldn’t agree more with the scientist. I am expecting the new life.
1. How long can many people live to be in 2035?A.100 years old. | B.120 years old. | C.140 years old. | D.150 years old. |
A.Your shirt. | B.Your kitchen. | C.Your fridge. | D.Your secretary. |
A.People don’t need to go to sleep at night. |
B.Cars can drive themselves without drivers. |
C.People can communicate with(与……联系) others with a watch. |
D.Clothes can change the color or style according to your needs. |
A.The writer predicates (预测) the life in 2035 will be the same as it is now. |
B.The writer predicates the life in 2035 will be much better than it is now. |
C.The writer predicates the life in 2035 will be much worse than it is now. |
D.The writer doesn’t agree with the scientist on the predication about the life in 2035. |
【推荐2】The weather is getting hotter and hotter. You are thirsty (口渴) playing basketball or riding home from school. A cold drink may be just the thing. But be careful what you are drinking. Something that looks cool may not be good for your health.
There are plenty of “energy drinks” advertisement (广告) on TV. Most of them have beautiful colors and cool names. They tell you they are helpful to your health. Sounds great and lots of people believe them!
But after a careful check you may find that most energy drinks have lots of caffeine (咖啡因) in them. These drinks are especially aimed at young people, students, busy people and sports players. Makers sometimes say their drinks make you better at sports and can keep you awake. But be careful not to drink too much.
Caffeine makes your heart beat fast. Because of this, the International Olympic Committee has limited (限制) its use. Caffeine in most energy drinks is as strong as that in a cup of coffee or tea. Possible health dangers have something to do with energy drinks. Just one box of energy drink can make you nervous, have difficulty sleeping and can even cause heart problems. Scientists say that teenagers should say no to drinks with a lot of caffeine in them.
1. How do the advertisements play an important role in selling energy drinks to people?A.By telling people they have lots of caffeine in their drinks. |
B.Makers sometimes say their drinks can keep you awake and make you better at sports. |
C.They make the weather become hotter and hotter. |
A.You may have difficulty sleeping and can even cause heart problems. |
B.Your heart beats fast and you may sleep well. |
C.Your heart beats slower than before. |
A.They are helpful to your health. |
B.Everyone can’t drink them. |
C.The young shouldn’t drink too much energy drinks. |
A.Nature. | B.Sports. | C.Health. |
【推荐3】The natural world is colorful with humans, plants and animals showing different colors.
Human skin can be many different colors and it changes with the sun, our feelings or our health for example. This is because of pigments(色素), which reflect light and make what the eye sees as colors. So, when we feel excited or angry, our heart can send more blood to the face and the pigments in the skin become red. This is why we have the expression that someone “sees red” when they are angry.
Plants also have pigments. Color is important for them to live on. The bright colors of flowers catch the attention of insects(昆虫), which then carry their pollen(花粉) from one flower to another. Bees can see colors we cannot, and they follow these to the inside of the flower. Without bees visiting flowers in this way, many plants would die out.
Animals also use color for their own need. They protect themselves with different colors so as not to be seen by predators. The snowshoe hare for example, a type of wild rabbit, changes color with seasons for this reason. During summer it is a brown color, and in winter it is white so that it can hide in the snow. However, some animals use color as a warning to make predators stay away. Bright colors such as yellow and red are often used in this way. Nature, however, is very clever, and predators also use colors to attract(吸引) the animals they feed on.
So, we can see that there may be many different reasons and uses for colors in the natural world. Some uses of color in nature remain unknown, but one thing is for sure, color not only makes our planet beautiful but it is also necessary for our planet to live on.
1. Paragraph 2 mainly tells us that ________ is/are the cause that makes human skin change color.A.feelings | B.pigments | C.blood | D.sunshine |
A.leaves | B.fruits | C.pollen | D.color |
A.hide in secret places | B.kill other animals for food |
C.change color with the sun | D.protect themselves from danger |
A.To describe animals’ ways of life. | B.To encourage us to study color in nature. |
C.To introduce the uses of colors for life on earth. | D.To explain the importance of protecting our planet. |