In the past 50 years, the amount of water in the open ocean with zero oxygen has gone up more than fourfold. In coastal water bodies，including river mouths and seas, low-oxygen sites have increased more than tenfold since 1950.Scientists expect oxygen to continue dropping even outside these zones as Earth warms .
“Oxygen is fundamental to life in the Oceans,” said Denise Breitburg, a marine ecologist with the Smithsonian Environmental Research Center. “The decline in ocean oxygen ranks among the most serious effects of human activities on the Earth ’s environment. Actually, it's a great loss to all the support services that rely on recreation and tourism, including hotels and restaurants and taxi drivers and everything else. The reverberations(严重影响) of unhealthy ecosystems in the ocean can be extensive.”
In areas traditionally called “dead zones" , like those in Chesapeake Bay and the Gulf of Mexico，oxygen plummets(大幅下跌) to so low levels that many animals die. As fish avoid these zones, their habitats become smaller and they’ re easier to be attacked or caught. But the problem goes far beyond “dead zones”. Even smaller oxygen decline can prevent growth in animals, hinder reproduction and lead to disease or even death. It also can cause the release of dangerous chemicals such as nitrous oxide, a greenhouse gas up to 300 times more powerful than carbon dioxide. While some animals can boom in “dead zones”，overall biodiversity falls.
Climate change is the key criminal in the open ocean. Warming surface waters make it harder for oxygen to reach the inside of the ocean. Furthermore, as the ocean as a whole gets warmer, it holds less oxygen. In coastal waters, too much nutrient pollution from land creates algal blooms, which use up oxygen as they die and break down.
People's livelihoods are also on the line, the scientists reported, especially in developing nations. Smaller fisheries(渔场)may be unable to relocate when low oxygen destroys their harvests or forces fish to move elsewhere. So we humans have to carry on a war now and win the war.
1.What does the first paragraph mainly talk about?
A.The ocean has been losing its oxygen. B.The amount of sea water is increasing.
C.The coastal water bodies are dangerous. D.The Earth becomes warmer and warmer.
2.What can we infer from Denise Breitburg's words?
A.Different oceans have different levels of oxygen.
B.The decline in ocean oxygen has great influences.
C.The future of tourism relies on the levels of ocean oxygen.
D.The decrease in ocean oxygen is the most serious environment problem.
3.How does the “dead zone" affect sea animals?
A.It offers more food. B.It forms dangerous gas.
C.It reduces their living areas. D.It produces more carbon dioxide.
4.How can we win the war according to the text?
A.By closing smaller fisheries. B.By controlling humans' bad activities.
C.By improving people's living standards. D.By stopping nutrients entering the ocean.
高一英语阅读理解困难题
In the past 50 years, the amount of water in the open ocean with zero oxygen has gone up more than fourfold. In coastal water bodies，including river mouths and seas, low-oxygen sites have increased more than tenfold since 1950.Scientists expect oxygen to continue dropping even outside these zones as Earth warms .
“Oxygen is fundamental to life in the Oceans,” said Denise Breitburg, a marine ecologist with the Smithsonian Environmental Research Center. “The decline in ocean oxygen ranks among the most serious effects of human activities on the Earth ’s environment. Actually, it's a great loss to all the support services that rely on recreation and tourism, including hotels and restaurants and taxi drivers and everything else. The reverberations(严重影响) of unhealthy ecosystems in the ocean can be extensive.”
In areas traditionally called “dead zones" , like those in Chesapeake Bay and the Gulf of Mexico，oxygen plummets(大幅下跌) to so low levels that many animals die. As fish avoid these zones, their habitats become smaller and they’ re easier to be attacked or caught. But the problem goes far beyond “dead zones”. Even smaller oxygen decline can prevent growth in animals, hinder reproduction and lead to disease or even death. It also can cause the release of dangerous chemicals such as nitrous oxide, a greenhouse gas up to 300 times more powerful than carbon dioxide. While some animals can boom in “dead zones”，overall biodiversity falls.
Climate change is the key criminal in the open ocean. Warming surface waters make it harder for oxygen to reach the inside of the ocean. Furthermore, as the ocean as a whole gets warmer, it holds less oxygen. In coastal waters, too much nutrient pollution from land creates algal blooms, which use up oxygen as they die and break down.
People's livelihoods are also on the line, the scientists reported, especially in developing nations. Smaller fisheries(渔场)may be unable to relocate when low oxygen destroys their harvests or forces fish to move elsewhere. So we humans have to carry on a war now and win the war.
1.What does the first paragraph mainly talk about?
A.The ocean has been losing its oxygen. B.The amount of sea water is increasing.
C.The coastal water bodies are dangerous. D.The Earth becomes warmer and warmer.
2.What can we infer from Denise Breitburg's words?
A.Different oceans have different levels of oxygen.
B.The decline in ocean oxygen has great influences.
C.The future of tourism relies on the levels of ocean oxygen.
D.The decrease in ocean oxygen is the most serious environment problem.
3.How does the “dead zone" affect sea animals?
A.It offers more food. B.It forms dangerous gas.
C.It reduces their living areas. D.It produces more carbon dioxide.
4.How can we win the war according to the text?
A.By closing smaller fisheries. B.By controlling humans' bad activities.
C.By improving people's living standards. D.By stopping nutrients entering the ocean.
高一英语阅读理解困难题查看答案及解析
Scientists around the world have been studying the warming of waters in the Pacific Ocean known as El Nino(厄尔尼诺). The appearance of El Nino is known to affect the weather around the world. Scientists still do not completely understand it. Yet they now find they can use it to tell about the future in different areas of the world.
One example is the work of two scientists at Columbia University in New York, Mark Cane and Gordon Eshel. A scientist of Zimbabwe, Roger Buckland worked with them. They have found that when El Nino appears, Zimbabwe has little or no rain. This means corn crops in Zimbabwe are poor. The last El Nino was in 1991 to 1993. That was when southeastern Africa suffered a serious lack of rain.
The scientists wrote about their recent work in the publication Nature. Their computer program can tell when an El Nino will develop up to a year before it does. They suggest that this could provide an effective early warning system for southern Africa, and could prevent many people from starving.
1.El Nino is known as ___.
A. the changing of the weather in southern Africa
B. the warming of waters in the Pacific Ocean
C. the weather which brings drought(旱灾) to Africa
D. the weather phenomenon (现象)that brings heavy rains to Africa
2.Scientists study El Nino in order that ___.
A. they can provide a kind of early warning to the place that will suffer from drought
B. they can tell why Zimbabwe has little or no rain
C. they can do some research work in this field.
D. they can put all this information into their computers.
3.Which of the following is TRUE according to the passage?
A. Nature is the name of the article written recently by the scientists.
B. Three scientists from the USA work on this subject.
C. Southern Africa suffered a serious drought and many people died from hunger.
D. El Nino has something to do with Zimbabwe’s poor crops.
4.What’s the best title for this passage?
A. Appearance of El Nino is Predictable（可预测的） B. Drought in Zimbabwe
C. Early Warning System D. Weather in Africa
高一英语阅读理解困难题查看答案及解析
Years ago I was hiking (徒步旅行) in the Himalayas and had made the mistake of changing a large amount of money into the local currency(货币). As I walked through the villages of the Annapurnas, it soon became ______ that the people were too poor to ______ even the simplest ______ . They had nothing. This meant that it was no use carrying the wad(捆) of ______ in my pack and I was a virtual(虚拟的) walking ______ compared to the local people. I grew to ______ the money and it was ______ to have it in my bag. This led to a remarkable experience that ______ me deeply and its ______ has never left me.
On this particular day I was left behind by my fellow hikers and found myself in a valley. As I made myself down, I noticed a young girl of around 13 ______ some sheep. Like so many of the children of the amazing Nepalese people, she was very beautiful. I couldn’t ______ looking at her and she looked at me. As I approached her she suddenly rushed ______ to me, and without a ______ , handed me a flower. She ______ at me for a tiny moment and then she ran away. The spirit in this lovely child had responded to something she saw in me and her first ______ was to find something to ______ . Due to her ______ , there was nothing she had ______ a single flower. The ______ of my bag was never heavier than at this moment and I had just received one of the most valuable ______ I have ever had in my life.
1.A. possible B. unnecessary C. strange D. obvious
2.A. own B. supply C. obtain D. export
3.A. goods B. questions C. surroundings D. activities
4.A. clothes B. flowers C. money D. bricks
5.A. victim B. contributor C. millionaire D. donator
6.A. dislike B. charge C. treasure D. display
7.A. optimistic B. embarrassing C. pleasant D. honorable
8.A. encouraged B. hurt C. brought up D. impressed
9.A. effect B. shadow C. result D. limit
10.A. hurting B. gathering C. caring D. feeding
11.A. choose B. continue C. help D. remember
12.A. on B. over C. off D. away
13.A. pause B. smile C. word D. voice
14.A. attacked B. stared C. shouted D. glanced
15.A. expression B. impression C. view D. idea
16.A. offer B. escape C. eat D. buy
17.A. anxiety B. poverty C. mind D. bag
18.A. besides B. apart from C. rather than D. more than
19.A. value B. amount C. weight D. package
20.A. experiences B. fortune C. changes D. presents
高一英语完形填空中等难度题查看答案及解析
Each year, about 7 million tons of trash (垃圾) is found in the ocean. This trash consists of cigarette ends, medical waste, plastic, mile-long nets, etc... Those items of trash choke (窒息) many species of ocean life so quickly that they eventually become extinct. Ocean pollution harms the earth and animals, and we should stop the problem.
Some other causes of ocean pollution are waste, poisonous chemicals, and the biggest cause is littering (乱丢垃圾). How do these items end up in the ocean? Waste flows through rivers and drains (下水道) directly to the ocean, so ocean pollution continues to step up. The estimated amount of ocean pollution that floated in the sea in 2012 was 288 million tons. This huge number continues to increase by 4% each year. That means 11, 520, 000 tons of trash increase each year. Imagine the future of our ocean. Will there be any room to swim? Also 80% of the ocean is composed of plastic: plastic bottles, plastic bags, and some plastic toys.
How can ocean pollution be solved? Use fabric bags instead of plastic bags. This would reduce the plastic pollution in the ocean. Also for the waste water problem, we could use waste water treatment system. Lastly using renewable energy sources such as wind power or solar power would limit offshore drilling.
If we don’t stop the causes of ocean pollution, water temperatures will continue to rise and ocean life will become endangered. Please be mindful that what we do affects the people around us, the animals around us, and the habitats around us. So will you pay attention to this problem or wait for the next generation to?
1.What leads to the ocean pollution worst?
A.Cigarette ends. B.Littering.
C.Medical waste. D.Plastic.
2.How many ways are mentioned to solve the problem in Paragraph 3?
A.3 B.4
C.5 D.6
3.What’s the author’s purpose in writing the text?
A.To introduce what’s ocean pollution.
B.To make a survey about ocean pollution.
C.To make us know more about ocean pollution.
D.To call on everyone to fight against ocean pollution.
4.What is the best title for the text?
A.The Seriousness of Ocean Pollution
B.The Solutions to Ocean Pollution
C.The Causes of Ocean Pollution
D.The Sorts of Ocean Pollution
高一英语阅读理解中等难度题查看答案及解析
Sharks have been swimming in the ocean for millions of years. They were on Earth even before dinosaurs! At the top of the world’s ocean’s food chain, sharks help keep the population of other ocean animals in balance. A large drop in the number of sharks can cause serious problems for all ocean animals. Saving sharks makes sense!
Many people are afraid of sharks. But most sharks are harmless. Only a small percentage of sharks are known to attack humans. It adapt(适应) well to new habitats and eat whatever is available. However, today, sharks are in trouble. Nearly one-third of the 400 shark species are in danger of extinction, largely due to over-fishing. Each year, tens of millions of sharks are caught and killed just for their fins(鳍). The fins are used to make shark fin soup.
Humane Society International (HSI) joined with the Jane Goodall Institute’s Roots and Shoots program and Beijing Zoo to protect sharks. An exhibit at the zoo, “the Price Behind the Taste-----Protect Sharks. Don’t Eat Shark Fins”, was designed to tell people that shark finning is cruel and unnecessary. It’s hoped that the activity will help put an end to the practice.
Shark fin soup is also eaten in the United States. In fact, the numbers of some shark species in US waters have dropped 90 percent in the last 30 years. To slow the fall, laws against the sale of shark fins have been passed in several states, including Hawaii, Oregon, Washington, and California.
1.What does the first paragraph mainly tell us?
A. Ocean animals are at the top of the food chain.
B. Sharks play an important role in the ocean
C. Sharks are an old species in the ocean.
D. Sharks are being caught and killed.
2.According to paragraph 2, sharks are in trouble because ______.
A. they often attack humans.
B. their food is being polluted.
C. they are being caught for food.
D. their habitat is being destroyed.
3.The underlined part “the practice” in Paragraph 3 refers to _______.
A. shark finning B. shark protection
C. the program of HIS D. the exhibit at Beijing Zoo
4.What do we know from the text?
A. There are 400 shark species in the United States.
B. It’s illegal to eat shark fin soup in the United States.
C. Most sharks are not interested in a human for dinner.
D. Sharks are very particular about their habitats and food
高一英语阅读理解中等难度题查看答案及解析
Sharks have lived in the world's oceans for millions of years. A shark has an extremely good sense of smell. It can find small amounts of substances in the water, such as blood, body liquids and chemicals produced by animals. These powerful senses help them find their food. 1.
Sharks grow slowly. About forty percent of the different kinds of sharks lay eggs. 2. Some sharks carry their young inside their bodies as humans do. Some sharks are not able to reproduce until they are twenty years old. Most reproduce only every two years. And they give birth to fewer than ten young sharks. For this reason, over-fishing of sharks is of special danger to the future of the animal.
3. .They eat injured and diseased fish. Their hunting activities mean that the numbers of other fish in the ocean do not become too great. This protects the plants and other forms of life that exist in the oceans.
People hunt sharks for sport, food, medicine and their skin. Experts say the international market for some kinds of sharks has increased greatly because many parts of a shark are valuable. 4. . Shark liver oil is a popular source of Vitamin. The skin of a shark can be used like leather. In Asia, people enjoy a kind of soup made from shark fins. Experts say a fisherman can earn a lot of money for even one kilogram of shark fins.
Sharks are among the oldest animals on Earth. 5. If too many sharks in one area are killed, the group of shark may never return to normal population levels
A. The others give birth to live young.
B. Sharks are important for the health of the world's oceans.
C. This is a threat to other form of life in the ocean.
D. Collectors pay thousands of dollars for the jaws of a shark.
E. Sharks are valuable to us and we can make full use of them.
F. But some sharks are in danger of disappearing from Earth.
G. Sharks eat fish, other sharks, and plants that live in the ocean
高一英语七选五中等难度题查看答案及解析
The past ten years have the great changes in all fields of our life, especially in the way we communicate.
A. assumed B. witnessed C. required D. expressed
高一英语单项填空中等难度题查看答案及解析
With the rapid growth of population, the city ____ in all directions in the past five years.
A.spreads B.has spread
C.spread D.had spread
高一英语单项填空中等难度题查看答案及解析
Although the New Year is already here, the great moments of the past year are still in the memory. Let’s look back at some of them.
United States
One of the world’s largest New Year’s Eve parties was held in Times Square, New York. The festival attracted hundreds of thousands of people to watch a brightly-lit ball drop on a landmark building at the stroke (击、打) of midnight.
A great amount of confetti (五彩纸屑) was released from the sky at zero o’clock.
Britain
Painted in shinning colors, blowing whistles, 50，000 party-goers arrived in London’s Millennium Dome to dance in the New Year. The Millennium Dome came to life at midnight as 50 DJs started up, competing on five separate dance floors to warm the crowd into the party mood.
Russia
New Year is the biggest holiday in Russia. It is traditional to put up a tree for celebrations with family and friends.
On the very last day of last year, Russians with a taste for a very cold swim braved freezing temperatures to plant traditional, festival trees on the bed of the Northern Ocean and at the bottom of Lake Baikal, the world’s deepest lake.
Malaysia
Brave skydivers threw themselves off the world’s tallest building near midnight and floated towards the New Year.
The jump from the 452-metre Petronas Twin Tower was called a real leap from one year to the next since the group took off in the last second of the old year and landed a minute later in the New Year. “That was really cool,” said Roland Simpson, “over crowds of onlookers to the landing spot.”
1.In New York the brightly-lit ball dropped ____________.
A．form the sky onto the Times Square
B．into the hundreds of thousands of watchers
C．to welcome the arrival of Christmas
D．at the point between the old and the New Year
2.Which of the following is NOT traditional to welcome a new year?
A．Sharing the happiness and excitement together.
B．Setting up a tree for celebrations.
C．Planting trees on the bed of a lake.
D．50 DJs’ competing on five separate floors.
3.People jumping from the tallest buildings _________.
A．spent two different years in the air.
B．stayed in the sky for two minutes.
C．landed over people’s heads.
D．floated away to the new land
4.The passage mainly shows that ________.
A．New Year has been the starting point for people to have dreams.
B．people in different countries welcomed New Year in different ways.
C．people’s ways of celebrations are exciting.
D．the New Year is better than the old year.
高一英语阅读理解中等难度题查看答案及解析
In the past twenty years, the sad father has been to many places-______his lost son.
A. in face of B. in favor of C. in charge of D. in search of
高一英语单项填空中等难度题查看答案及解析