-
London has always been known for its "black fogs". In the winter of 1952, a milky white fog rolled into the city. As the smoke poured into the air, it was so hard to see that people had to walk in front of the buses to guide them. In this way, the most serious air pollution disaster in history began. When it was over, more than 4,000 people had been killed by the thick black smog.
New York City has had several London-type smogs since 1950. Each time, 100 to 400 deaths were caused by the smog. Although these smogs were not as deadly as London's, New York City has the worst air pollution problem in the United States.
In all the killer smogs, factories and homes poured smoke and fumes into the air from the furnaces. The chemical fumes combined with the water droplets in the fog to form harmful substances. These substances caused the illness of those who breathed the polluted air.
Usually, such harmful fumes rise into the upper air and are blown away by the wind. But sometimes there is an unusual weather condition called a temperature inversion. A layer of cold air remains near the ground as smoke and fumes pour into it. This is covered by an upper layer of warm air that acts like a lid. It prevents the polluted cooler air from rising. The harmful fumes pile up and make people ill. The smog may be so thick that airports are closed and chains of collisions occur on the highways.
Another type of smog occurs in Los Angeles. Here the weather may be clear and sunny. But stinging eyes and dry coughs show that harmful chemicals fill the air. The smog is due to invisible gases, mostly from automobile exhaust. Because these chemicals are changed by the sun high up in the air, it is called photochemical smog. It contains automobile exhaust fumes and nitrogen oxides changed by the sun's rays. Added to these are sulfur dioxide and other fumes from factories and oil refineries. Photochemical smog is found in many large cities all over the world.
Killer smogs don't happen very often, fortunately. But in Beijing, a combination of automobile exhaust fumes, home furnace smoke, and factory waste gases pours into the air. This may also happen in the suburbs, or out in the country, where large factories have been built. A number of harmful substances have been found in the air there. When these substances are breathed in day after day, the health of the population is affected.
1.Why do people call this phenomenon "black fog"?
A. It is black and dirty.
B. It can affect the health.
C. It can kill people.
D. It is too thick for people to see something.
2.What can reduce the air pollution according to the passage'?
A. Water. B. Wind. C. The sun. D. Cold air.
3.When photochemical smog happens in the city, .
A. many people will be killed
B. black smoke may pour into the air
C. the weather may be fine
D. people have to walk to work
4.From the passage we know that the most serious black smog disaster took place in .
A. London B. New York C. Los Angeles D. Beijing
高一英语阅读理解中等难度题查看答案及解析
-
In the world today, hunger is still the biggest threat to health. Hunger holds back children’s growth and their dreams. Around 67 million of the world’s hungriest children do not attend school. 1. Even if they do make it into the classroom, hunger will affect their ability to learn.
Mary’s Meals is a Scottish charity that was started in 1992. 2. It sets up school feeding projects in some of the world’s poorest countries. The charity provides one daily meal in schools to attract hungry children to the classroom, where they receive education to get out of poverty. Thanks to the supporters and volunteers around the world, Mary’s Meals is now providing life-changing meals to 1,257,278 poorest children in 15 countries.
3.
● It has reduced hunger among children at school. Many children, teachers and volunteers observed the positive physical effects that the school feeding programmer is making. The percentage of teachers saying “children in my class never complain of hunger” increased from 7% to 87%.
● 4. 98% of teachers said that children pay more attention in class since Mary’s Meals started feeding at their school.
● It has reduced levels of children quitting school! Teachers reported a reduction in the number of children dropping out of school due to hunger.
● It has increased children’s feelings of happiness at school. The percentage of children saying “I feel happy at school” increased from 60% to 81%.
By one meal at a time and one child at a time, Mary’s Meals fills hungry children’s empty stomachs so they have the energy and opportunity to learn. 5..
A. Most of them hate to go to school.
B. It has improved children’s concentration in class.
C. In order to survive, they have to work or beg.
D. Research has proved Mary’s Meals has many positive effects.
E. This offers the children a life free from hunger and full of hope.
F. Since then it’s grown from a small organization to a global movement.
G. They are reaching out to more hungry children waiting for Mary’s Meals.
高一英语七选五中等难度题查看答案及解析
-
1.When we got back from the cinema, we found the lamp burning on but the door _____ (shut).
2.Her _________ ( come) back made her parents excited lot.
3.It is so cold that you can’t go outside __________ fully covered in thick clothes.
4.__________hard one may work, one cannot master a foreign language in a year or two.
5.Mr. Black together with two professors _________ (be) to attend our school meeting tomorrow.
6.Neither you nor I ________ (be) equal to the job, because it calls for work experience.
7.Students should take part in community activities ______ they can gain experience for growth.
8.He got the first place in this examination, _____________ I expected.
9.Many young people, most of
__________ were well-educated, headed for remote regions to chase their dream.10.Mr. Luke, in ___________ supermarket we bought an iPad last week, will give us a report on how to choose a career this evening.
高一英语完成句子简单题查看答案及解析
-
In the center of the room stood a table with a _____ lamp on it, so it is very
bright in the room.
A．lighted
B．lighting
C．lit
D．light
高一英语单项填空简单题查看答案及解析
-
On October 17, 2016 the Shenzhou-11 manned spaceship was sent into space from the Jiuquan Satellite Launch Centre in Gansu. Two days later the spaceship successfully connected with the space laboratory Tiangong-2. It meant China got closer to its plan of building a space station in 2020.
The spaceship took two Chinese astronauts to space this time. Jing Haipeng was an experienced astronaut who flew on Shenzhou-7 in 2008 and Shenzhou-9 in 2012. But it was Chen Dong’s first space flight.
Jing and Chen were given a 30-day task on Tiangong-2. They tested new technology and did experiments to prepare for future space station tasks. The astronauts themselves were also the subject (对象) of those experiments. The life support devices (设备) they used and how they lived inside the space laboratory were studied. No Chinese astronaut had stayed in space for that long before.
A month-long space task was not easy, so Chinese scientists and engineers had come up with lots of new technologies to allow astronauts to stay more safely and more comfortably in space. One of the new technologies tested during this task was a device called “space hospital”. The space hospital was two little silver boxes tied around the two astronauts, legs. Through the “space hospital”, scientists and doctors on the Earth could watch the astronauts, heart rate and temperature. When the astronauts felt tired, the “space hospital” could even massage (为…按摩) them.
After this task, China was expected to send an unmanned cargo spaceship (无人货运飞船) in mid-April the next year. It docked with Tiangong-2 and took new fuel to the space laboratory.
1.The spaceship connected with the space lab oratory Tiangong-2 on .
A. October 17 B. October 19 C. November 19 D. November 20
2.How many times has Jing Haipeng been to space?
A. Once. B. Twice. C. Three times. D. Four times.
3.Which of the following is NOT true according to the passage?
A. China will build its own space station in 2020.
B. In October, 2016 Chen Dong took his first space flight.
C. The two astronauts themselves did experiments in space.
D. In 2020 another cargo spaceship will take new fuel to the space laboratory.
高一英语阅读理解中等难度题查看答案及解析
-
The small victories in the fight against poverty and hunger have helped many people who are in trouble allowing them to maintain dignity.
A．before B．after C．for D．while
高一英语单项填空中等难度题查看答案及解析
-
Thanks to the weather satellite, scientists can ____ the weather more accurately.
A. settle B. command
C. forecast D. broadcast
高一英语单项填空中等难度题查看答案及解析
-
Thanks to Dr Yuan’s research, the UN has more tools in the battle to rid the world _____ hunger.
A．of
B．on
C．off
D．at
高一英语单项填空中等难度题查看答案及解析
-
The creative projects of World Food Program (WFP) focused on preventing hunger from taking hold in the future and breaking the cycle of hunger. Here are some of the ways in which we work to prevent hunger in the future:
School Meals
As well as directly addressing hunger, School Meals projects encourage families to keep their children in school and help them build better futures. If children aren’t hungry they will concentrate on their lessons. With a solid education growing children have a better chance of finding their own way out of hunger. These projects benefit girls especially. For more information: www.wfp.org/schools meals.
Food for Assets（有用的人）
WFP’s Food for Assets projects provide the hungry with food to lay the foundation for a better tomorrow. When poor farmers no longer have to worry about the next meal, they have the time and energy to build irrigation（灌溉） systems that can increase production. Similarly, Food for Training projects allow the poor to devote time to learning skills that will sustain（维持） them economically in the future. For more information: www.wfp.org/food-assets.
HIV/AIDS
WFP uses its food rations(配给) to reduce the blow of HIV and AIDS. The agency distributes its rations to people living with HIV and AIDS, so they can keep providing for their families for longer and have time to transfer vital knowledge and skills to the growing number of AIDS children--the next generation of food providers in developing countries. For more information: www.wfp.org/hiv-aids.
Purchase for Progress
WFP buys large amounts of food in developing countries. It has this purchasing power and uses it to help poor farmers contact reliable markets where they can get competitive prices for their produce. With secure markets, farmers will be encouraged to produce more and innovate(创新).The knock-on effect (连锁效应) is producing more food for everyone. For more information: www.wfp.org/purchase-progress.
1.The text is written with the purpose of ____.
A. seeking solutions to some hot issues
B. introducing some of WFP’s projects
C. raising money for the people in need
D. calling readers’ attention to the poor
2.The farmers who want to receive some training should visit_____.
A. www.wfp.org/food-assets
B. www.wfp.org/hiv-aids
C.www.wfp.org/purchase-progress
D.www.wfp.org/school-meals
3.AIDS children can benefit from food rations in that（在于，因为）_____.
A. they no longer go hungry
B. they can take care of their parents
C. they don’t have to worry about food
D. they can learn more skills from their parents
4.By buying large amounts of food in developing countries, WFP aims to ____.
A. help farmers to increase their income
B. introduce new ways of farming to farmers
C. encourage farmers to produce more food
D. motive farmers to plant different kinds of crops.
高一英语阅读理解中等难度题查看答案及解析
-
The wildfires damaging parts of Australia can be seen from space in new satellite images released by NASA. Australia's capital, Canberra, was enveloped in a smoky haze Sunday and air quality at midday was measured at 10 times the usual dangerous limit. The damaging fires have killed at least 24 people in Australia and destroyed almost 2,000 homes. The early and damaging start to Australia’s summer wildfires, fed by drought and the country's hottest and driest year on record, has also been catastrophic (毁灭性的) for the country's wildlife, likely killing nearly 500 million birds, reptiles and mammals in New South Wales alone, Sydney University ecologist Chris Dickman told the Sydney Morning Herald.
Under such extreme conditions, the fires have been generating enough heat to create their own weather systems, including fire-generated thunderstorms and fire tornadoes. Thousands of firefighters continued to fight the flames that have burned millions of acres in New South Wales, Victoria and South Australia, an area twice the size of Maryland. In New South Wales, the rural fire service (RFS) said as of Sunday there were 150 fires active in the state, 64 of them uncontrolled.
On Saturday, Prime Minister Scott Morrison announced that, for the first time in Australian history, 3,000 army, navy and air force reservists (后备军人) will battle against the fires. He also committed $14 million to hiring fire-fighting aircraft from overseas. On Sunday, cooler temperatures and lighter winds brought some relief to threatened communities, a day after thousands were forced to escape as flames reached the suburban areas of Sydney. Thousands of firefighters fought to contain the fires, but many fires continued to burn out of control, threatening to wipe out rural townships and causing almost incalculable damage to property and wildlife.
1.What does the underlined phrase “fed by” mean ?
A.get food from someone B.be strengthened by something
C.be destroyed by something D.under control of something
2.Why were there thunderstorms and tornadoes ?
A.Because the fires generated thunderstorms and tornadoes.
B.Because there was rainy weather.
C.Because the fires generated enough heat to create extreme weather.
D.Because the weather systems is easy to change.
3.What can we learn form the last paragraph ?
A.Many soldiers will fight against the fires as they have done before.
B.Fires were controlled due to cooler temperatures and lighter winds.
C.A lot of people moved out of the suburban areas.
D.Damage to property and wildlife is limited.
4.What would be the best title for this passage ?
A.Australia's destructive wildfires B.Soldiers fought against the fires
C.Wildlife died form the fires D.Australia’s wildfires was under control
高一英语阅读理解中等难度题查看答案及解析
__________ were well-educated, headed for remote regions to chase their dream.