《2026年学易优高考二轮总复习英语》

A
（2025·杭州高三质检）Waterways are important for every country around the world. They provide not only water for everyday use but also routes for transport. However, due to industrial activity, many of them are now polluted.
Dakota Perry from the US has experienced water pollution first - hand. The 15 - year - old high school girl told *Alabama Local News* that she spends a lot of time going on boat rides with her dad on the river behind their house. However, the river has become littered with plastic bags, bottles and cups. Perry wanted to clean up the water so she could continue to enjoy the river. So, with the help of her father, she designed a system to collect and remove rubbish in waterways.
In May, Perry put forward her solution at the Regeneron International Science and Engineering Fair held in Georgia, the US, and received a Judge's Award from the National Oceanic and Atmospheric Administration for her project.
According to the *Science News for Students* website, her system was inspired by the Dutch Great Bubble (气泡) Barrier in Amsterdam, which creates a flow of bubbles that trap waste and directs it to a catchment system. But Perry tried to challenge herself and make her system more environment - friendly. She planned to create a curtain of bubbles that stretched the river diagonally (对角地). The curtain would stop the floating rubbish and then push it toward the shore. Once there, a conveyor run by a solar - powered battery would carry the waste to a dustbin.
In her backyard pool, Perry used an air compressor (压缩机) to send air through a pipe full of holes to create a stream of bubbles. She experimented with different amounts of pressure to make sure there would be enough bubbles to form a full curtain. “For the bubble system to actually work and collect rubbish,” she explained to *Science News for Students*, “I have to know how much pressure the air compressor is supposed to push out.”
After she tested her system for collecting rubbish, Perry found that it worked better than expected. Next, she plans to work out how to use the power of the river to run the air compressor.
1. What motivated Perry to design a rubbish - collecting system?
A. Her father's encouragement.
B. Her desire to protect a nearby river.
C. A visit to a science and engineering fair.
D. An invention of a Dutch high school student.
2. What can we know about the rubbish - collecting system?
A. It was designed by Perry alone.
B. It makes power to run the air compressor.
C. It collects solar energy to remove rubbish.
D. It creates a bubble curtain to block rubbish.
3. What is the 5th paragraph mainly about?
A. Advantages of the system.
B. The way of testing the system.
C. The improvement on the system.
D. Challenges in the design process.
4. What kind of person is Perry?
A. Efficient and ambitious.
B. Helpful and hard - working.
C. Responsible and creative.
D. Professional and adventurous.

答案： 1. B 2. D 3. B 4. C

B
（2025·开封高三一模）Biodegradable (可生物降解的) food packaging could remind people of spoiling (变坏的) food by its changing color.
Best - before labels are often poor predictors of when food becomes dangerous to eat, which can lead to waste and food poisoning, says Benedetto Marelli at the Massachusetts Institute of Technology. So, he and his colleagues tried to create wrap that can react to changes in food.
They made four films similar to plastic wrap, each consisting of two layers. One layer was made from a protein obtained from silkworm silk, while the other was made of one of four so - called covalent organic frameworks (COFs). These materials contain carbon and hydrogen, as well as atoms like oxygen or nitrogen, all arranged in a grid pattern that makes the material porous (透气的).
After checking the films were strong, the researchers tried to compost them. For the best - performing film, 50% of it degraded after it was placed in soil for 30 days, which is comparable to existing biodegradable plastics.
The material also changed color when put in liquid with different pH values, due to the COF layer's interaction with the liquid. Because the pH of food increases as it spoils, the researchers tried to use a piece of the film as a color - changing label attached to a packet of raw chicken. The label was originally orange but turned yellow and got 17% lighter after 20 hours at 30℃, indicating that the meat had begun to spoil.
The researchers also loaded the COF layer with an antimicrobial chemical, a substance used to destroy or suppress the growth of harmful microorganisms such as bacteria, viruses, or fungi. After 15 days, soya beans packaged in the film and left in high heat had about a third as much mould (霉菌) as beans wrapped in traditional plastics.
To make a real impact, the material will need to be affordable and easy to produce. “The bar to competing with plastic products is very high,” says Marelli.
1. How did the new wrap begin?
A. From best - before labels.
B. From making four films.
C. From weighing the waste.
D. From measuring temperature.
2. What is the advantage for the new packaging?
A. It can tell the food state.
B. It won't be spoiled.
C. It can be easily made.
D. It is not porous.
3. What can we learn about the new packaging in the passage?
A. There is a long way to go.
B. It becomes heavier when heated.
C. It has been available now.
D. More mould appears in the film.
4. What would be the best title for this passage?
A. Best - Before Labels on Goods
B. Biodegradable Food Packaging
C. Covalent Organic Frameworks
D. Antimicrobial Chemicals

答案： 1. B 2. A 3. A 4. B