1. How many people died in a landslide in 2003?
| A．About two hundred. | B．Over one thousand. | C．About two thousand. |
| A．Growing grass. | B．Cutting down trees. | C．Growing population. |
| A．Growing more forests. |
| B．Chopping down the old forests. |
| C．Getting busy in protecting our country. |
1. How does the woman feel at first?
| A．Curious. | B．Surprised. | C．Excited. |
| A．Flowers. | B．Mushrooms. | C．Trees. |
| A．Two. | B．Three. | C．Four. |
| A．On Thursday. | B．On Friday. | C．On Saturday. |
When John pulled into his mother’s driveway with his young daughter, Lily, the sight of the familiar lychee (荔枝) tree welcomed them. “Look, Lily,” John said, pointing to the towering tree in the front yard. “It’s the family tree.”
Lily smiled as John treated the tree as if it were a real family member, patting its trunk (树干) affectionately. As they were admiring the tree, the screen door opened and out stepped Grandma Mei, bathed in the warm Florida sunlight. Grandma Mei, who came from the province of Guangdong in China, was known for her green thumb, particularly when it came to lychees.
Seeing her granddaughter, Grandma Mei adjusted her baseball cap and asked if Lily was ready for some lychees. But Lily hesitated, for the fruit’s appearance was unlike any other fruit she had tried before. With a laugh, Grandma Mei gave her a gentle hug. “More lychees for me then, John,” Grandma Mei said.
“Let’s get busy!” John said with enthusiasm, rubbing his hands together. “Family tree’s waiting.”
Hearing Dad calling the tree by name, Lily couldn’t help laughing. “Laugh if you want, Lily, but this tree is really family. On cold nights, before family tree was fully grown, Grandma Mei used to take my blanket and throw it over that tree.” Grandma Mei nodded, adding that she had to protect the tree from bad weather so that it would become a big strong tree and grow fruit for the whole family.
John, eager to start the day’s work, began climbing the tree, determined to harvest the best lychees for the family. Lily watched in amazement, noticing the clusters (簇) of lychees, their skin rough yet inviting.
As John skillfully cut through the branches with a cutter, Lily expressed her concern for the well-being of the tree. John explained to her that cutting the ends of branches won’t hurt family tree. Instead such behaviour made it healthier and stronger.
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。
Lily’s hesitation towards the fruit gradually shifted to curiosity and she wanted to try it.
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Later in the afternoon, they all sat under the tree, surrounded by boxes filled with lychees and sharing stories related to lychees.
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4 . Scientists have shown how plants can protect themselves against genetic (基因的) damage caused by environmental stresses. The growing tips of plant roots and shoots have an in-built mechanism (机制) that spells cell death if DNA damage is detected, avoiding passing on faulty DNA.
Plants have small populations of stem cells (干细胞) at the tips of their roots and shoots, which enable them to continuously grow and produce new tissues throughout their lifetime. These stem cells serve as ancestors for plant tissues and organs. However, any genetic faults present in the stem cells will continue to exist and be passed on permanently throughout the plant’s life, which could last thousands of years.
Given the critical role of stem cells and their exposure to potentially dangerous environments at the growing tips of roots and shoots, safeguards are necessary to prevent stem cell faults from becoming fixed. Researchers Nick Fulcher and Robert Sablowski, funded by the Biotechnology and Biological Sciences Research Council, aimed to uncover these protective mechanisms. Through experiments involving X-rays and chemicals, they discovered that stem cells were more sensitive to DNA damage compared to other cells.
When DNA damage occurs, the cells have the capacity to detect it and cause programmed cells to die, preventing the propagation of the damaged genetic code to the rest of the plant tissues. This process has similarities to the safeguard mechanism found in animal cells, which has been broadly studied due to its relevance in preventing cancer.
The identification of a similar protective system in plants is of great interest in the field of plant development. It also helps scientists develop plants that can better handle environmental stress. So knowledge of how plants deal with these stresses is of fundamental significance to agricultural science’s response to climate change.
1. What is the function of the in-built mechanism in plants?| A．To produce more roots and shoots. | B．To increase the overall lifetime of the plant. |
| C．To enhance plant growth and nutrient intake. | D．To stop genetic faults in stem cells passing on. |
| A．They are relatively abundant in quantity. | B．They are resistant to environmental stresses. |
| C．They make quick response to DNA damage. | D．They have the ability to repair damaged DNA. |
| A．Spread. | B．Change. | C．Existence. | D．Self-repair. |
| A．The way of dealing with climate change on the earth. |
| B．The significance of identifying the protective system in plants. |
| C．The method of ensuring plant survival under environmental stress. |
| D．The urgency of developing plants that can handle environmental stress. |
5 . Warmer oceans can cause coral (珊瑚) bleaching. Bleaching happens when the coral, colonies of tiny animals called polyps, lose colored algae (藻类) living in their bodies and turn completely white. Without the algae, the coral loses its main food source and can die.
In 2021, the United Nations reported a 14 percent loss of corals across the world largely from rising sea temperatures in the previous 13 years. Australia declared mass bleaching events in 2022 across large parts of the Great Barrier Reef, the fourth since 2016.
Reefs in Hawaii, Florida, and the Caribbean were all severely affected, but thankfully some coral areas were not. Scientists looked into the characteristics of these corals and their ecosystems to see how others could be protected. Warm water reefs in the tropics are the worst affected by bleaching, but they also contain corals with better heat resistance.
Research is focused on finding genes for heat tolerance so that they can be passed on to future generations. Biologists mix corals that are more resilient to higher temperatures with those that are not and the resulting hybrid generation has a better chance of survival.
Researchers in Florida’s reefs have been using ocean nurseries to replant coral with batches that contain genes resistant to heat, acidification, and disease. Those areas have recovered within a year.
Other projects like Revive and Restore are using methods like preserving older coral populations’ sperm and eggs (biobanking) and using corals with better adaptability characteristics in breeding. The project also believes that boosting biodiversity by restoring (恢复) seabirds to islands, and ridding them of invasive species like rats, helps coral reefs thrive.
Ultimately, scientists say that without a serious reduction in greenhouse gas emissions, 99 percent of the world’s coral reefs will be gone by the end of the century. There is a limit to how quickly coral can adapt, especially given the rate of climate change. Computer simulations have shown that mild or moderate warming allows coral to adapt, but if temperatures rise rapidly then extinction is certain.
1. What mainly causes coral bleaching?| A．Loss of algae. | B．Lack of food. |
| C．Warm oceans. | D．Ocean pollution. |
| A．Coral reefs in tropics are easier to bleach. |
| B．Some corals are found better to resist heat. |
| C．Coral reefs in some areas are badly affected. |
| D．Ecosystems in some coral areas are destroyed. |
| A．Breeding hybrid generation with heat resistance. |
| B．Replanting batches of corals containing diseases. |
| C．Restoring seabirds of islands and invasive animals. |
| D．Setting no limitation of greenhouse gas emissions. |
| A．Botany. | B．Culture. | C．Nature. | D．Education. |
6 . Increased human activity and climate change have caused a rise of algae (藻类植物) in water bodies around the world—sometimes choking ecosystems of sunlight and oxygen. In more extreme cases, they can produce dangerous poisons that can sicken or kill people and animals. But the plenty of algae could prove crucial as our population rises beyond eight billion people worldwide because algae are crops that don’t need land, freshwater, or fertilizer to fill nutritional gaps.
And even though they are so closely associated with human’s bad impact on Earth, algae could also play vital roles in slowing climate change and helping fight against pollution, viruses, and more. With microplastic pollution documented in almost all habitats related to water, a study showed that algae can help filter microplastics from water. Algae can also filter chemicals that can be used for fertilizer.
Algae can produce more effective biofuel than traditional sources. Rescarchers at a German algae growing facility are already using it to fuel plane. Researchers believe this and other sustainable fuels could reduce carbon released from airplanes by up to 80 percent.
Animal feed containing a kind of red algae reduces harmful methane(甲烷)released from cattle by more than 80 percent. The addition works by changing the environment in a cow’s stomach, stopping the production of methane before it can be released.
Red algae can stop the copies of some viruses, and have been shown to stimulate the body’s immune (免疫的) system and could become a powerful anti-HIV medicine.
In 2019, freshwater algae were launched into space to change the CO2 breathed out by astronauts on the International Space Station into oxygen. Since algae are also high in protein, they could replace up to 30 percent of astronaut food in the future.
1. What can we know about algae from the first paragraph?| A．Better late than never. | B．Every coin has two sides. |
| C．All is well that ends well. | D．Two heads are better than one. |
| A．They avoid climate change. | B．They absorb pollutants in the air. |
| C．They reduce microplastics in the water. | D．They filter most poisonous chemicals. |
| A．Change animal feed into methane. |
| B．Store carbon released from airplanes. |
| C．Help researchers to create traditional sources. |
| D．Create biofuel and reduce methane in cows’s stomach. |
| A．By helping fight against diseases. | B．By increasing human’s strength. |
| C．By producing more oxygen than other plants. | D．By replacing much food for astronauts. |
7 . Now, a study proves that gardens are more than just a pretty place. The study, by researchers at Illinois State University, demonstrates that such constructed gardens can have a measurable and positive impact on water quality.
Floating gardens are essentially platforms built and wrapped in coconut husks (椰子壳), and filled in with native plantings. As plants grow, they extend their roots into the water. On the North Branch of the Chicago River, non-profit Urban Rivers and its partners are developing a mile-long floating eco-park called the Wild Mile. The re-development of this former industrial canal is Urban Rivers’ important project. As part of the park, floating gardens, attached to shore, are being fixed.
The primary aim of the floating gardens is beautification. But the Illinois State team, from the University’s Department of Geology, Geography, and the Environment, saw an ideal setup for a controlled experiment. “We joined it because it’s the perfect opportunity to see if there’s an influence on water quality,” explains lead author Abigail Heath.
The study is novel: previous studies have explored floating gardens’ influence on water quality over time, primarily in wastewater treatment ponds, but not over space, in moving water. The project also matches well with Urban Rivers’ broader goals. “The city is interested in bettering water quality,” says Phil Nicodemus, Urban Rivers’ Director of Research. “Happily, Illinois State took part in it later.”
Could this small human-made park improve water quality? An average of data collected over the course of the study shows middle but definitive improvement. For example, nitrogen (氮) dropped from 4.69 milligrams per liter in surface water to 4.43 milligrams per liter, a drop of about 1 percent.
“Despite how small this garden was, there was measurable improvement in water quality from upstream to downstream,” notes Heath. She and her colleagues see this as a model for how large floating gardens should be to help improve water in similar settings. “Even this tiny garden makes a difference,” she says.
1. What can be inferred from the second paragraph?| A．The floating gardens are environmentally friendly. |
| B．The floating gardens are fixed everywhere in the eco-park. |
| C．The floating gardens can help fix the former parks. |
| D．The Urban Rivers were once industrial canals. |
| A．To reduce waste water. | B．To attract more visitors to the park. |
| C．To make the surroundings brilliant. | D．To help researchers do the experiment. |
| A．The floating garden. | B．The project. |
| C．The treatment of ponds. | D．The quality of water. |
| A．Floating Gardens: More than Pretty |
| B．The Best Way to Better Water Quality |
| C．A Practical Method of Improving Parks |
| D．Floating Gardens Beautify the City |
8 . For many people, catching a smell of freshly cut grass is a pleasant sign that warmer weather is here to stay. For the grass, however, this scent signals an entirely different story.
The smell we associate with freshly cut grass is actually a chemical SOS, one used by plants to beg nearby creatures to save them from attack. After all, when danger strikes —whether it's gardening equipment or a hungry caterpillar — plants can't lift their roots and run. They must fight where they stand. To protect themselves, plants employ a string of molecular (分子) responses. These chemical communications can be used to poison an enemy, warn surrounding plants of dangers or attract helpful insects to perform needed services.
Clearly, plants can communicate. But does that mean they can feel pain? According to some researchers, plants release gases that are the equivalent of crying out in pain. Using a laser-powered microphone, researchers have picked up sound waves produced by plants releasing gases when cut or injured. Although not audible to the human ear, the secret voices of plants have revealed that cucumbers scream when they are sick, and flowers cry when their leaves are cut.
There's also evidence that plants can hear themselves being eaten. Researches show that plants understand and respond to chewing sounds made by caterpillars dining on them. As soon as the plants hear the noises, they respond with several defense mechanisms.
For some researchers, evidence of these complex communication systems — giving out noises via gas when in pain — signals that plants feel pain. Others argue that there cannot be pain without a brain to register the feeling. Still more scientists infer that plants can exhibit intelligent behavior without possessing a brain or conscious awareness.
As they grow, plants can change their paths to avoid obstacles or reach for support with their tendrils (卷须). This activity comes from a complex biological network distributed through the plants' roots, leaves and stems. This network helps plants reproduce, grow and survive.
1. What does the smell of freshly cut grass signal?| A．Warmer weather. | B．Being poisonous. |
| C．Cry for help. | D．The need of services. |
| A．By giving out gases. | B．By changing the color of their leaves. |
| C．By producing audible sound waves. | D．By sharing it through the root systems. |
| A．Their tendrils. | B．Their biological network. |
| C．Their communication systems. | D．Their conscious awareness. |
| A．Do plants feel pain? | B．How plants protect themselves? |
| C．Do plants communicate? | D．How plants grow and reproduce? |
9 . The Bridegroom's Oak, a 500-year-old tree just outside of Eutin, in Germany, has its own postal address and receives around 40 letters every day. They're sent by love seekers from around the world, in the hope that someone will read them and write back.
With so many dating apps and services available nowadays, sending letters to a tree hardly sounds like the best way to find love. However, there's something charming about sending a letter and allowing fate (命运) to work its magic, so the Bridegroom's Oak remains popular even now.
In 1890, a local girl named Minna fell in love with a young chocolate maker named Wilhelm, but her father didn't allow her to see the boy. Instead of giving up on each other, the two started exchanging love letters secretly, by leaving them in a knothole (节孔) of an oak tree. After about one year, Minna's father found out about their continued relationship, but instead of punishing them, he gave them permission to marry. The two lovers got married on June 2, 1891, under the oak tree that helped keep their romance (罗曼史) alive.
The couple's story spread around Eutin, and soon, people unable to find love started writing romantic letters and leaving them in the tree's knothole. By 1927, it was already known as Bridegroom's Oak and was so popular that it had its own address and postal code, allowing people from all over Germany and even abroad to send in their letters.
Love seekers visiting the Bridegroom's Oak need respect only one simple rule. They can check all the letters in its knothole, and take with them the one they wish to reply to, but they have to put the others back for other people to find.
So far the Bridegroom's Oak has been responsible for at least 100 marriages and many other romantic relationships.
1. What's the Bridegroom's Oak popular for?| A．Its long life. |
| B．Its special function. |
| C．Its good position. |
| D．Its rare species. |
| A．The best way to find love a century ago. |
| B．What sufferings the two lovers experienced. |
| C．How the two lovers kept their romance alive. |
| D．The love story behind the Bridegroom's Oak. |
| A．Reply to all the letters in its knothole. |
| B．Read each letter in its knothole. |
| C．Put their name at the top of each letter. |
| D．Take as many letters away as they like. |
| A．Writing to the Bridegroom's Oak does work. |
| B．Germany needs dating apps and services. |
| C．Germans hold a firm belief in fate. |
| D．Foreigners have little idea of the Bridegroom's Oak. |
