相关试卷

According to large study group analysis and systematic reviews, cancer risk, particularly colorectal cancer, begins to increase when red meat intake exceeds about 350-500 grams of cooked weight per week. That's roughly three to four servings per week. Beyond this, the risk rises in a dose-dependent way. For example, an analysis found that for every additional 100 grams of red meat per day, colorectal cancer risk increased by about 12%-17%. For processed meat, the evidence is even stronger and more consistent. Processed meats — like bacon, sausages, ham, and cured meats — were classified by the World Cancer Research Fund as Group 1 carcinogens, meaning there is sufficient evidence that they cause cancer in humans.

Lab-grown meat is produced from animal cells and is not the same as salt-cured processed meat. There's no long-term human data yet, so any risk would depend on how it's made and cooked, with lower exposure expected if no heavy processing is applied and high-temperature roasting is minimised. Lab-grown meat is indeed made by quickly growing animal cells in a controlled environment, but not by using cancer cells. The cells used are normal animal stem cells, which are grown and differentiated into muscle and fat cells, being carefully monitored to ensure they grow safely and do not become abnormal or cancerous.

Some people worry about safety because the cells multiply quickly, but this is completely natural; it's the same way stem cells grow and repair tissue in animals. The process is closely monitored to ensure the cells remain healthy and normal. In fact, lab-grown meat avoids some of the health risks linked to traditional meat, such as bacteria from slaughterhouses and harmful chemicals from processing.

Marineland, located by Niagara Falls, shut down in 2024 due to rising debts. Without income for whale care, the park could no longer provide proper care for its 30 belugas. Most were born in captivity; consequently, they lack essential survival skills, making their release into the wild a death sentence.

In 2025, in a desperate attempt to save the belugas, the park begged the Canadian government to allow their transfer to a foreign marine facility — a last hope for their safety. Unexpectedly, however, federal officials turned down the request flatly. They cited laws that ban the use of cetaceans for entertainment, arguing that relocating the whales would only keep them confined (受限) in tanks, which went against the spirit of the law.

This refusal put the park in a cruel dilemma: without support or relocation approval, it might have to euthanize the whales. Once kept for human amusement, these belugas now face being forgotten — a tragic "selective abandonment," unlike well-known species that draw public concern.

Above all, their suffering reveals a painful truth: humans often use animals for pleasure and profit, only to cast them aside when they are no longer useful. In fact, protecting animals means keeping our promise to care for those we have taken in, especially when they are at their most vulnerable. These belugas did not choose to be confined to tanks; they were brought into captivity by humans. Thus, we owe them a chance to live a decent life, not a lonely and unnecessary death.

International Science Olympiads (ISO)

Held July-August (e.g., Singapore), ISO covers 6 core subjects like Physics, Chemistry, and Biology. It includes rigorous 3-hour theory exams and 4-hour experiments, comprehensively testing academic knowledge and practical skills. Only the top 1% of global students qualify to compete here, utilizing labs equipped with basic sensors.

Eligibility: Students aged 16-19 who have won national-level contests and demonstrated exceptional aptitude in their chosen subject.

Note: Candidates need to undergo training for 6+ months and check visa application deadlines at least 2 months in advance to avoid delays.

Int'l High School Film Festival (IHSFF)

Held Oct-Nov (Tokyo, Paris), it showcases 5-15 minute student films (drama, documentary). Highlights include professional jury feedback and cinema screenings.

Eligibility: Ages 15-19 with original works.

Note: Submit 3 months earlier online and avoid unapproved materials.

World Schools Debating Championships (WSDC)

Rotating countries Dec-Jan (S. Africa 2023, Canada 2024), it features 3-on-3 English debates on AI privacy and social equality. Each debate has 7 parts, and the grand final is covered by BBC.

Eligibility: Ages 14-18 on national teams with fluent English.

Note: Practise 2-3 formats weekly and adjust time zones.

THIMUN (Model UN)

Hosted in The Hague every January, this Model UN gathers 2,000+ students from 100+ countries. They simulate (模拟) UN delegates to debate climate mitigation and refugee (难民) rights, then draft resolutions. It improves public speaking and critical thinking.

Eligibility: Ages 14-18 via school teams (5-8 students).

Note: Research topics 1-2 months prior and follow debate rules.

注意：

1.续写词数应为 150 左右；

2.请按如下格式在答题卡的相应位置作答。

Last Saturday afternoon, I walked home alone after school. On the way, I noticed an old man standing by the roadside, looking worried. He held a small basket of fresh vegetables in his hand. It was obvious that he wanted to sell his vegetables but no one stopped.

The weather was cold and the wind was blowing strongly. The old man's hands were red with cold. I felt sorry for him. I remembered my mom always bought fresh vegetables for family dinner. So I walked up to him and asked about his vegetables.

Paragraph 1:

I decided to buy all his vegetables.

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Paragraph 2:

The old man thanked me repeatedly with a big smile.

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1.活动时间、地点；

2.活动内容（读书分享、交流讨论、优秀作品展示）；

3.欢迎全体同学参加。

注意：

1.词数 80 左右；

2.可以适当增加细节，以使行文连贯；

3.通知格式规范，开头结尾已给出，不计入总词数。

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Traditional Chinese paper-cutting is a famous folk art with a history of more than 1500 years. It is widely popular in rural areas of China.

Paper-cutting works (main) use red paper, because red stands for luck and joy in Chinese culture. People often stick paper-cutting on windows, doors and walls (celebrate) festivals and weddings.

The skills of paper-cutting are simple but flexible. Without any complex tools, people only need scissors and paper (create) vivid works. Common patterns include flowers, animals and Chinese characters, carry people's best wishes.

In the past, paper-cutting (pass) down by local folk artists from generation to generation. Nowadays, this traditional art (face) new development chances. More young people begin to learn paper-cutting. Many schools have set up paper-cutting clubs to help students understand traditional culture.

Paper-cutting is not only a kind of art, also a cultural symbol of China. It records local customs and reflects people's love for life. In 2006, Chinese paper-cutting (list) as national intangible cultural heritage.

With the spread of Chinese culture overseas, paper-cutting has won (great) popularity around the world. It has become a wonderful bridge cultural communication between China and other countries.

At first, I was a little nervous because I didn't know how to1 with the elderly. When I visited Grandma Wang's home, she greeted me with a warm smile and invited me in. Her house was simple but2. I began to help her wipe windows and sweep the floor.

While working, Grandma Wang told me many stories about her youth. She used to be a teacher and devoted all her life to3 rural children. Listening to her gentle voice, I was deeply4 by her selfless spirit.

After finishing the cleaning, I sat down and chatted with her. She said her children worked in other cities and she often felt5. She was very happy to have someone to talk with on that cold winter day.

Before I left, Grandma Wang held my hand and thanked me again and again. I told her that it was my6 to help her. This activity made me realize that the elderly need not only material help, but also spiritual7.

Small kindness can bring great warmth. This volunteer experience taught me to8 others. I decided to take part in more volunteer activities in the future, to pass on9 and warmth to more people. I believe that every little effort can make the world a10 place.

Reading is one of the best ways to improve ourselves. However, many people find it hard to stick to reading. Here are some useful tips for you.

. Many people fail to keep reading because they choose books that are too difficult or boring. If you are a beginner, start with simple and interesting books such as travel journals and story books. Easy reading can build your confidence.

Set a fixed reading time.. You can choose 15–20 minutes every morning or before bedtime. Fixed time helps form muscle memory, and you will gradually get used to reading every day.

Put books in visible places. If books are hidden in drawers, you will easily forget to read.. When you see books at any time, you will be more likely to pick them up and read for a while.

Share reading feelings with others. Reading alone is quiet, but sharing makes reading more meaningful. You can talk with your friends or family about your gains from books..

Never stop reading. Don't give up even if you miss reading for one or two days.. As long as you keep going, you will surely gain a lot from long-term reading.

A. Start with suitable books

B. Choose famous classic works

C. Place books on desks or bedsides

D. Consistency is the key to reading

E. It helps you understand the books better

F. Reading time should be long and continuous

G. Short daily reading is better than occasional long reading

In the early stage of wind energy development, wind power technology was extremely immature and had many defects. The early wind turbines were huge in size, noisy in operation and high in manufacturing and maintenance costs. Most importantly, the power generation efficiency was very low, which could not meet the large-scale power demand of society. At that time, wind energy could not compete with traditional fossil energy in terms of cost, efficiency and stability, so it was only applied in a small number of remote areas. However, with the continuous progress of science and technology and the unremitting research of scientific researchers, modern wind power equipment has been comprehensively upgraded and greatly improved. The new generation of wind turbines is smaller in noise, higher in power generation efficiency, more stable in operation, and can adapt to complex and changeable wind conditions in different regions.

Compared with traditional fossil energy, wind energy has many irreplaceable obvious advantages. First of all, wind energy is extremely environmentally friendly. It produces no exhaust gas, no waste residue and no greenhouse gases during the whole power generation process, which will not cause any pollution to the atmosphere and environment, and plays an important role in alleviating global warming and improving ecological environment. Moreover, wind resources belong to endless natural renewable resources, which will not be exhausted with use, completely different from non-renewable fossil energy such as coal and oil that will eventually face resource depletion. In addition, for remote mountainous areas and pastoral areas without perfect power line infrastructure, distributed wind power generation equipment can provide stable and reliable electric power for local residents' daily life and production, solving the power supply problem in remote areas.

Although wind energy has outstanding environmental and resource advantages, it also has unavoidable limitations in practical application. The biggest shortcoming of wind power generation is its instability. Power generation efficiency is completely dependent on natural wind speed and wind force. When the wind is weak or there is no wind, the power generation capacity will drop sharply or even stop working, so it cannot provide continuous and stable power supply like thermal power generation. Besides, large-scale wind farms are mostly built in open wilderness, grasslands or offshore areas. The rotating blades of wind turbines may disturb the flight route of birds and affect the living and breeding environment of local birds, causing a certain impact on regional ecological biodiversity.

Aiming at the existing problems and limitations of wind energy utilization, scientific researchers all over the world are continuously carrying out technological research and innovation to optimize wind power equipment and improve energy utilization efficiency. New technologies such as intelligent wind speed regulation and energy storage power supply are being gradually applied to wind power projects, which can effectively make up for the instability of wind power generation and realize continuous power supply. With the continuous breakthrough of new energy technologies, the shortcomings of wind energy will be gradually improved and solved. It is undeniable that wind energy, as a core clean energy, will play a more important and indispensable role in the global energy system in the future, effectively promoting the green transformation of global energy structure and the sustainable green development of human society.

Urban gardening brings countless tangible benefits to urban residents and the whole city environment. First of all, it is an excellent way to relieve life and work pressure. Modern urban people are always surrounded by electronic screens such as mobile phones and computers, facing fast-paced life and heavy pressure all day long. Taking time every day to water, weed and prune plants allows people to stay away from electronic devices temporarily, calm their impetuous moods and enjoy the peace and comfort brought by nature in busy urban life. Secondly, vegetables and fruits planted by oneself are pure green and pollution-free, without pesticide and fertilizer residues, allowing families to eat safer and healthier ingredients, and people can also enjoy the beauty of blooming flowers at home all year round. Besides, large-scale urban family planting can effectively increase urban green coverage, improve urban air quality by absorbing carbon dioxide and releasing oxygen, and relieve the urban heat island effect caused by dense buildings.

In addition to physical and environmental benefits, urban gardening is also a valuable educational and emotional activity. For children growing up in cities far away from rural nature, planting plants by themselves allows them to intuitively observe the whole growth process from seed germination, leaf growth to flowering and fruiting, helping them understand the basic growth rules of nature and popularize natural science knowledge. In the process of carefully taking care of plants day after day, children can also cultivate good qualities such as patience, carefulness and sense of responsibility. At the same time, urban gardening is a warm parent-child interactive activity. Many families complete sowing, watering and harvesting together in their spare time, which effectively increases parent-child communication, narrows the distance between family members and greatly improves family relationship harmony.

With the global advocacy of low-carbon environmental protection and green life concept, urban gardening has been recognized and pursued by more and more people, and its development prospect is very broad. It does not occupy precious urban land resources, has low cost and high practicability, and perfectly adapts to the living conditions of urban residents. It is a simple, efficient and sustainable way to optimize urban living environment and enrich daily life. In the future, with the continuous promotion of green urban construction, urban gardening will surely become a common lifestyle in every urban family, making urban life greener, warmer and more vibrant.