Dolphins (海豚) live in a dark underwater world. It’s often impossible to see each other or anything else around them, so sound plays an important role in their survival. To communicate with each other, dolphins produce all kinds of sounds.
Only other dolphins understand what the sounds mean. Scientists haven’t uncovered their secret communication, except for one kind of whistle. It might last less than a second, but this whistle is a big deal. Why? Because these whistles are actually names of dolphins — and every dolphin has one. Scientists call these sounds a “signature whistle.” When other dolphins hear the whistle, they know which dolphin is calling.
Dolphins often hunt by themselves but still need to stay connected to the group. Since they can’t always see each other, dolphins use their signature whistles to check in with other dolphins hundreds of yards away. “In coastal areas, dolphins exchange whistles even when they’re a third of a mile apart,” says Greg Campbell, who studies animals. That means dolphins shout out to group members that might be nearly five football fields away.
What’s amazing is who names the baby dolphin. Not the mother. Not an auntie dolphin or another group member. Scientists believe the baby dolphin itself comes up with the signature whistle. Like human babies, a baby dolphin plays with sounds throughout its first year. While testing its sound skills, a baby dolphin is doing something amazing. It’s creating or figuring out its signature whistle. How or why it chooses its signature whistle is not clear. Studies show that most of the time the signature whistle is nothing like its mother’s or group members’ whistles.
When the baby dolphin is about a year old, its signature whistle is set. It repeats it often so the other dolphins learn to recognize it.
Deciphering(破译) dolphin names is just the beginning of figuring out what dolphins communicate about. Do they chat about sharks? Discuss the tides? Maybe they even have a name for people. Someday scientists are to decipher the rest of dolphins’ communication.
1.Sound is important for dolphins because of ________.
A.their poor sense of direction
B.their living environment
C.their strong enemies
D.their big groups
2.The dolphin’s signature whistle ________.
A.lasts a long time
B.can travel long distances
C.is especially helpful in hunting
D.can be recognized by other animals
3.The author writes the text mainly to ________.
A.encourage readers to study dolphins
B.tell readers how dolphins communicate
C.show how lovely and clever dolphins are
D.introduce a special sound made by dolphins
4.A baby dolphin gets its name ________.
A.soon after it was born
B.according to its size
C.all by itself
D.with the help of its group
高一英语阅读理解中等难度题
Dolphins (海豚) live in a dark underwater world. It’s often impossible to see each other or anything else around them, so sound plays an important role in their survival. To communicate with each other, dolphins produce all kinds of sounds.
Only other dolphins understand what the sounds mean. Scientists haven’t uncovered their secret communication, except for one kind of whistle. It might last less than a second, but this whistle is a big deal. Why? Because these whistles are actually names of dolphins — and every dolphin has one. Scientists call these sounds a “signature whistle.” When other dolphins hear the whistle, they know which dolphin is calling.
Dolphins often hunt by themselves but still need to stay connected to the group. Since they can’t always see each other, dolphins use their signature whistles to check in with other dolphins hundreds of yards away. “In coastal areas, dolphins exchange whistles even when they’re a third of a mile apart,” says Greg Campbell, who studies animals. That means dolphins shout out to group members that might be nearly five football fields away.
What’s amazing is who names the baby dolphin. Not the mother. Not an auntie dolphin or another group member. Scientists believe the baby dolphin itself comes up with the signature whistle. Like human babies, a baby dolphin plays with sounds throughout its first year. While testing its sound skills, a baby dolphin is doing something amazing. It’s creating or figuring out its signature whistle. How or why it chooses its signature whistle is not clear. Studies show that most of the time the signature whistle is nothing like its mother’s or group members’ whistles.
When the baby dolphin is about a year old, its signature whistle is set. It repeats it often so the other dolphins learn to recognize it.
Deciphering(破译) dolphin names is just the beginning of figuring out what dolphins communicate about. Do they chat about sharks? Discuss the tides? Maybe they even have a name for people. Someday scientists are to decipher the rest of dolphins’ communication.
1.Sound is important for dolphins because of ________.
A.their poor sense of direction
B.their living environment
C.their strong enemies
D.their big groups
2.The dolphin’s signature whistle ________.
A.lasts a long time
B.can travel long distances
C.is especially helpful in hunting
D.can be recognized by other animals
3.The author writes the text mainly to ________.
A.encourage readers to study dolphins
B.tell readers how dolphins communicate
C.show how lovely and clever dolphins are
D.introduce a special sound made by dolphins
4.A baby dolphin gets its name ________.
A.soon after it was born
B.according to its size
C.all by itself
D.with the help of its group
高一英语阅读理解中等难度题查看答案及解析
Scientists have discovered a special biological behavior in dolphins(海豚) that could lead to a treatment for late-onset diabetes(晚发的糖尿病) in humans. Studies on dolphins found that healthy dolphins switch into a diabetic-like state overnight when they are not feeding, but return to normal when they eat the following morning.
The extraordinary finding has led scientists to suggest that dolphins have “genetic switch” that allows them to imitate diabetes while they are not feeding for a night, without suffering any ill effect.
If researchers can identify a similar genetic pathway in human, they may be able to develop drugs to effectively switch off diabetes. Some 2.2 million people in Britain have type 2 (or late-onset) diabetes, a figure that is expected to reach 4 million by 2025 as a consequence of rising levels of obesity(肥胖).
The tissues of people with type 2 diabetes have become resistant to insulin(胰岛素)so they lose the ability to control sugar levels in their blood. The condition can damage the heart, eyes, kidneys(肾脏) and nerves and contribute to 5% of all deaths, according to the World Healthy Organisation.
Dolphins appear to imitate diabetes to keep high levels of blood sugar when food is rare. Like humans, dolphins need some sugar in their blood for their brains to function normally. Venn-Watson’s team analysed 1,000 blood samples(样本) from 52 dolphins while they didn’t eat anything overnight and fed in the morning. At night time, the dolphins’ metabolism(新陈代谢)changed greatly and showed similar characteristics to that seen in people with type 2 diabetes.
“It is our hope that this discovery can lead to new ways to prevent, treat and maybe even cure diabetes in humans,” said Stephanie Venn-Watson, director of clinical research at the National Marine Foundation in San Diego.
1.What’s the main idea of the passage?
A. Humans get some idea of treating diabetes from dolphins.
B. Dolphins can switch into a diabetic-like state overnight.
C. Humans can suffer the same disease as dolphins.
D. Dolphins should be fed regularly to avoid diabetes.
2.The key to applying the finding to curing human diabetes lies in ____________.
A. producing insulin in a larger amount
B. developing drugs from healthy dolphins
C. identifying a similar genetic pathway in human
D. analysing more blood samples from hungry dolphins
3.Which of the following statements is TRUE according to the passage?
A. Scientists have found a similar genetic switch in humans.
B. More British people will suffer type 2 diabetes due to obesity.
C. 2.2 million people with type 2 diabetes die in Britain every year.
D. Dolphins imitate diabetes to avoid a high blood sugar level.
4.What will happen to dolphins if not fed for a night according to Venn-Watson?
A. Their metabolism breaks down.
B. They become resistant to insulin.
C. Their heart and kidneys are damaged.
D. They keep high levels of blood sugar.
高一英语阅读理解中等难度题查看答案及解析
We often close ourselves off when painful events happen in our lives. Instead of letting the world soften us, we let it drive us deeper into ourselves. We try to ignore the hurt and, pain, but we can’t hide from ourselves. 1.
The items listed below are four tips you can open your heart more fully and completely.
1. Breathe into pain
Whenever a painful situation arises (出现)in your life, try to face it instead of running away. 2.. When the sadness strikes, take a deep breath and accept it. By using our breath we soften our experiences and allow more newness.
2. 3.
We’re often confused (困惑的)at the next step to take. Actually, we can try a new decision making process. To start this process, we may ask, “Heart, what decision should I make here? What action feels the most right?” See what comes up, then put it into practice and evaluate(评价)the outcome.
3. Spend time alone
For most of our lives we’re surrounded by people: our friends, family members, and strangers. 4. When you spend time in solitude(孤独), you’re free from the influences of other people. It might be painful at first, but eventually you’ll add a whole new understanding into your life.
4. Get outside of yourself
5. But in reality, they actually work hand-in-hand. After you’ve explored the depths of yourself, you come away with a new understanding.
Now, it’s time to share that —not through telling others, but through being with others.
A. Have a light heart
B. Ask your heart what it wants
C. Is there anything I’m hiding from myself?
D. How often do we really spend time alone?
E. This may seem a little contradictory(对立的)to the last tip.
F. We should open our hearts and take action to heal(使愈合)the wounds.
G. When we run away from sadness, it gets stronger and more real.
高一英语七选五中等难度题查看答案及解析
Dolphins are not fish, but warm-blooded animals. They live in groups, and speak to each other in their own language. In this way they are like other animals, such as bees and birds. But dolphins are very different from almost all land animals. Their brain is nearly the same size as our own, and they live a long time --- at least twenty or thirty years.
Like some animals, dolphins use sound to help them find their way around. They also use these sounds to talk to each other and to help them find food. We now know they do not use their ears to receive these sounds, but the lower part of the mouth, called the jaw.
Strangely, dolphins seem to like man, and for thousands of years there have been stories about the dolphin and its friendship with people.
There is a story about sailors in the 19th century. In a dangerous part of the sea off the coast of New Zealand, they learnt to look for a dolphin called Jack. From 1871 to 1903 Jack met every boat in the area and showed it the way. Then in 1903 a passenger on a boat called The Penguin shot and wounded Jack. He recovered and for nine years more continued to guide all ships through the area-except for The Penguin.
Today, some people continue to kill dolphins, but many countries of the world now protect them and in these places it is against the law to kill them.
1.Dolphins are different from many other animals in that they _____.
A. live in groups B. have their own language
C. are warm-blooded D. have large brains
2.Which of the following does the dolphin use to help it find its way around?
A. Its jaw. B. Its ears
C. Its nose. D. Its eyes.
3.By telling the story of Jack the writer wanted to show that _____.
A. people are cruel to animals
B. Jack is different from other dolphins
C. dolphins are friendly and clever
D. dolphins should be protected by law
4.Why did the sailors off the coast of New Zealand look for Jack?
A. They wanted his help.
B. They enjoyed playing with him.
C. He was lonely and liked to be with people
D. He was seriously wounded.
高一英语阅读理解中等难度题查看答案及解析
In summer people often wear dark glasses as ______ against the bright sunshine.
A.permission | B.protection | C.prediction | D.prevention |
高一英语单项填空简单题查看答案及解析
Chinese football fans often _______ late to watch live matches of the World Cup.
A.stay up | B.mix up | C.turn up | D.put up |
高一英语单项填空中等难度题查看答案及解析
For years,the giant squid (大王乌贼) had remained a modern mystery.Living in the dark depths of the ocean,the creature is difficult for scientists to observe directly.It had also managed to avoid all attempts to film it.That changed last July:for the first time ever,scientists were able to catch the giant squid on video in its natural habitat.They were amazed by what they saw.The scientists filmed the squid in the North Pacific Ocean,south of Tokyo,Japan.They followed it down to a depth of 2,952 feet.They shot more than 23 minutes of video before the squid swam off into even darker depths.The video footage will be released to the public later this month on The Discovery Channel.
Tsunemi Kubodera,a zoologist at Japan's National Museum of Nature and Science,led the team that filmed the squid.The team went into the ocean in a small submarine with lights invisible to both humans and squid.Since giant squid eat smaller squid,the scientists released a small squid as bait (诱饵).Then the scientists waited in the pitch black for the giant squid to approach.
The color video shows the creature floating vertically,eating the bait squid.The giant squid is 9 to 10 feet long and is missing its two longest tentacles (触须).With those tentacles,it could have measured up to 26 feet long.It has huge black eyes,the size of dinner plates,“It was shining and so beautiful,” Kubodera said.
Because the deep ocean is so unfriendly to humans,little is known about the giant squid.Scientists say catching the mysterious creature on video is an important step toward understanding it.For centuries,sailors had reported seeing a huge,ocean-dwelling beast,thought to be the giant squid.The creature is also believed to be the subject of the Nordic myth of the kraken,a sea creature that supposedly attacked ships in Scandinavian waters over the past thousands of years.
1.Why is it difficult to film the giant squid?
A.Because it is illegal to film the giant squid.
B.Because it is too expensive to make such a film.
C.Because the giant squid lives in the dark deep ocean.
D.Because the giant squid is dangerous to humans.
2.We can learn from the first paragraph that scientists ________.
A.first saw the giant squid in the ocean
B.discovered a new sea creature in the ocean
C.have the ocean bottom secretly recorded on video
D.have first caught the legendary giant squid on video
3.According to the passage,the giant squid's longest tentacles can be ________.
A.16 to 17 feet long
B.9 to 10 feet long
C.more than 26 feet long
D.about 36 feet long
4.The scientists released a small squid in the ocean to ________.
A.increase the number of the giant squid
B.trick the giant squid into coming out
C.make an educational film about it
D.show concern for the giant squid
高一英语阅读理解中等难度题查看答案及解析
Most animals on land are known to us, but many living things underwater are not. Now let’s get to know some of them.
Sea cucumber
Sea cucumber are strange animals living at the bottom of the sea. They wear brown or pale green coats with many sticks up. When summer comes, they stay deep to sleep because they are afraid of heat. And when it is autumn, they move to shallow (浅的) water and get their food.
Pike
The pike is a kind of freshwater fish. They are good swimmers and like swimming near boats, waiting to be fed. They have sharp teeth to catch fishes. When they are young, they live in groups. However, when they grow up, they prefer to live alone.
Cuttlefish
A cuttlefish can swim quite fast, so it is also called rocket (火箭) fish. It has eight arms and two feelers on its head, just around its mouth. It ejects ink (喷墨) when it is in danger. Its meat is delicious, and it is often the first choice for many people.
Octopus
An octopus has long arms, with which to catch food and protect itself. When it is sleeping, one or two of its arms are still on duty, keeping moving. Once it feels something dangerous, it can wake up at once to take action.
1.Sea cucumbers stay deep to sleep in summer because they ________.
A. are afraid of high temperature B. want to get strong and fat
C. are afraid of their enemy D. want to live alone
2.According to the passage, ________ likes to swim near boats.
A. the sea cucumber B. the pike
C. the cuttlefish D. the octopus
3.What happens if a cuttlefish meets its enemy?
A. It rushes at the enemy at once. B. It cuts off one of its arms.
C. It bites with its sharp teeth. D. It ejects ink to the enemy.
4.The ________ of an octopus can help protect it when in danger.
A. color B. arms C. sound D. smells
高一英语阅读理解中等难度题查看答案及解析
People live in different parts of the world and lead different types of lives. Their lifestyles change across the different areas in the world. What is the difference between a city and country life? Let us see.
We can see the modern facilities everywhere in the city like the Internet, telephone, television and satellite communication facilities are widely available in the city. A majority of families in the city are enjoying this technological advancement.
The increasing population has led to an imbalance in human population. More and more industries have led to environmental problems like pollution.
However, the rise in economic growth has resulted in a self-centered nature of society. While technological advancement has brought the world closer, human beings have gone far apart from each other.
The country is not crowded with constructions all over. Houses are rather widely spaced with enough room for fields and gardens. The country is the only area fortunate enough to house the greens. People in the country live in close to nature. Apart from people, there is room for pets and animals that help keep a balance in nature.
Due to a lesser number of people in the country, it is not overcrowded by people. These areas have least amounts of pollution. Pollution is less also because of very less number of industries in the country. The life may not be as enjoyable as that in the city, but the people there are generous, kind and friendly. The country is the one where humanity(人性) is still alive.
Every coin has two sides to it. While we can’t enjoy expensive things and technology in the country, it is rich in its relationship with ‘nature’. The city life is modern in technology and career opportunities. However, the falling humanity and a bad environmental balance affect the bright future of city life.
1.What’s the main purpose of the passage? _________.
A. To persuade more people to live in the country.
B. To inform us of some information about a better life.
C. To tell us differences between city life and country life.
D. To explain why people don’t want to live in the city.
2.Which of the following shows the right structure of the passage? __________.
① ① ①
A. ②③④ ⑤⑥ B. ②③④ ⑤⑥⑦ C. ①②③④ ⑤⑥ D.④⑤⑥ ②③
⑦ ⑦ ⑦
3. According to the passage, the main reason for pollution is ____________.
A. technology and economy B. population and industries
C. population and humanity D. industries and balance.
4.The underlined word in the fifth paragraph most probably refers to ___________.
A. green gas B. green buildings C. green lands D. green animals
5.It can be inferred from the last paragraph that __________
A. it’s up to you whether to choose city life or country life.
B. both city life and country life have advantages and disadvantages.
C. more and more people will move to the country in the future.
D. the young prefer city life while the old choose country life.
高一英语阅读理解中等难度题查看答案及解析
We often think of future. We often wonder what the world would be like in a hundred years’ time.
Think of space, perhaps a permanent (永久的) station on the moon will have been set up. Perhaps people will be able to visit the moon as tourists. Cheap rockets for space travel will have been developed, permitting long journeys throughout the solar system (太阳系). When that time comes, people will be taking holidays in space and visiting other planets. Great progress will have been made in medicine, too. Perhaps a cure will have been discovered for the most terrible of all diseases (疾病)— cancer. Pollution is a problem we must solve. In a hundred years’ time it will have been controlled.
The world will have been developed — even Antarctica. There will be large cities in Antarctica. We already have supersonic (超音速的) flight, but in a hundred years’ time we will have supersonic land travel as well.
We will have used up most of earth’s land to build our cities, so floating cities will have been built. The Japanese already have plans for cities of this kind. And there will be cities under the sea. The first of these will have been completed.
1.We will have developed ________ in a hundred years’ time, permitting long journeys all over the solar system.
A.cheap rockets for space travel. B.a plane
C.a spaceship D.a satellite
2.Man will also have supersonic land travel ________
A.in a year B.about half a century later
C.in the year 2005 D.about a century later
3.Which of the following is true? ________
A.There must be a permanent station on the moon in the future.
B.There will be no pollution in the future.
C.There is no cities in Antarctica now.
D.We may find a treatment for cancer in the future.
4.The last paragraph mainly talks about ________
A.we’ll make good use of space on the earth.
B.cities under the sea.
C.Japan will first build floating cities.
D.earth’s land is in danger.
高一英语阅读理解中等难度题查看答案及解析