1 . Plastic, which is now common, contains endocrine-disrupting chemicals, or EDCs (内分泌干扰物), that has been linked to increased risk of many chronic diseases. Parental exposure to EDCs, for example, has been shown to cause metabolic (新陈代谢的) disorders, including obesity and diabetes, in the later generations.

Led by Changcheng Zhou, a professor of biomedical sciences in the School of Medicine at the University of California, the researchers investigated the impact of fathers’ exposure to a phthalate called dicyclohexyl phthalate, or DCHP (邻苯二甲酸二环己酯), on the metabolic health of first generation (F1) and second generation (F2) in mice. Phthalates are chemicals used to make plastic more durable.

The researchers found that fathers’ DCHP exposure for four weeks led to high insulin (胰岛素) resistance and impaired insulin signaling in F1. The same effect, but weaker, was seen in F2 .

“We found fathers’ exposure to EDCs may have intergenerational and transgenerational detrimental effects on the metabolic health of their later generations, ”Zhou said. “To the best of our knowledge, our study is the first to demonstrate this.”

In the case of fathers’ exposure in the study, intergenerational effects are changes that occur due to direct exposure to a stressor, such as exposure to DCHP of fathers (F0 generation) and his F1 generation. Transgenerational effects are changes passed down to later generations that are not directly exposed to the stressor (for example, F2 generation).

“This suggests that fathers’ DCHP exposure can lead to sex-specific transgenerational effects on the metabolic health of their later generations,” Zhou said.

Zhou stressed that the impact of exposure to DCHP on human health is not well understood, even though DCHP is widely used in a variety of plastic products and has been detected in food, water, and indoor particulate matter.

“It’s best to minimize our use of plastic products,” Zhou said. “This can also help reduce plastic pollution, one of our most pressing environmental issues.”

1. Why are phthalates added to plastic?

A．To beautify it.	B．To make it long-lasting.
C．To reduce its cost.	D．To increase its weight.

2. What does the underlined word “detrimental” in paragraph 4 probably mean?

A．Negative.

B．External.

C．Distinct.

D．Adventurous.

3. What did Zhou advise people to do?

A．Bury plastic waste.	B．Watch out for the food they eat.
C．Use fewest plastic products.	D．Never produce plastic products.

4. What can be a suitable title for the text?

A．Plastic contains endocrine disrupting chemicals

B．Plastic pollution is a pressing environmental issue

C．DCHP is widely used in a variety of plastic products

D．Chemicals in plastic may impact two generations’ health

2 . How to limit your environmental impact while travelling

Travelling unlocks a world of endless possibilities and adventures, allowing us to hike through breathtaking landscapes, encounter kangaroos and deer in their natural habitat, and witness the power of volcanoes.     1     Increased plastic waste and noise pollution can damage ecosystems. Thankfully, there are ways to limit our impact on the environment.

Try to travel by land instead of air. While air travel can often be quicker, it is typically one of the most polluting forms of transport.     2     For example, if you’re heading to Las Vegas from Los Angeles, driving for around four hours emits (排放) around 75% less CO₂ compared to the one-hour flight (provided you have several friends with you).

    3     A typical hotel uses about 73,000 gallons of water per year. As laundering towels (洗熨毛巾) is an energy-and-water-consuming process, many hotels often put up signs asking you to re-use your towels. By doing so, you’ll reduce your environmental impact.

Make the most of safe tap water (自来水). Drinking tap water may come as a shock to many travelers. But when you’re in countries where tap water is safe to consume, avoid bottled options. Not only are they more expensive, but they have a higher level of pollution compared to treated tap water.     4    

Respect the local environment. When visiting different destinations, we should recognize the importance of protecting the natural beauty. We mustn’t throw rubbish everywhere.     5     Additionally, supporting local conservation (保护) efforts, such as participating in community-led clean-up projects, can make a positive impact on the local environment.

A．Be a responsible hotel guest.

B．Explore with green tour companies.

C．Instead, carry a bottle and refill it wherever you can

D．And we should avoid activities that may harm wildlife.

E．However, tourism can also be harmful to the environment.

F．Low-cost airlines have made it much more affordable to travel.

G．Taking the train or driving in some countries may be better options.

3 . The ocean is home to more than 200,000 known species and as many as 2 million that we have yet to discover. And, it is also home to 24.4 trillion pieces of microplastics. In 2022, researchers spotlighted how bad marine microplastic pollution, is getting: The total amount of microplastics on the bottom of oceans has greatly increased. in the past two decades.

Microplastic particles don’t just end up at the bottom of the ocean. Animals are eating them — at least 1,500 species have been reported to ingest plastic. And a lot of it. For example, whales in New Zealand’s Hauraki Gulf consume roughly three million microplastics daily, according to research published in Science of the Total Environment, which analyzed whale waste to see how much microplastics were present.

“Other research has shown that if plastics are small enough, they can cross the gut(肠道) wall and get into internal organs though the long-term effects are still unclear. Plastics can also release chemicals that are harmful to digestive system,” says Kahane-Rapport. “This is concerning, and while we do not yet understand the long-term health-effects, it is likely not a good sign for whales and their prey(猎物) to eat a man-made material like plastic.”

This is obviously bad for whales, but it also has effects on humans and the ocean at large. We are also part of these food chains and are consuming microplastics regularly. They are in our bottled water, in our table salt — they are even in our house dust and in the air we breathe. And we still don’t know what the health effects are. Meanwhile, the impact on whales — and what it indicates — is troubling on many fronts. “Whales are ecosystem engineers,” says Kahane-Rapport. “They can spread the nutrients that they consumed and serve as ecosystem guards — when whales are not healthy, other parts of the system will suffer.”

Kahane-Rapport says more research is needed. “The next research step will be to determine how much plastic the whales excrete(排出) and how much is left in their bodies. Following that, we would be able to determine the direct health effects on their tissues.”

1. What does the underlined word “ingest” in paragraph 2 probably mean?

A．Deal with.

B．Bring up.

C．Take in.

D．Spread out.

2. What can be inferred from paragraph 3?

A．Researches show contradictory results.

B．Digestive system is the most affected part.

C．Small plastics are more harmful than big ones.

D．Much about microplastics’ harm remains unclear.

3. What is paragraph 4 mainly about?

A．The various sources of pollution.

B．Tab chain reaction of microplastics.

C．Possible solutions to plastic pollution.

D．Growing awareness of ocean protection

4. What will the following research focus on?

A．Microplastic pollution to the ocean bottom

B．The sufferings of other ocean creatures.

C．Whales’ contributions to the ecosystem.

D．The amount of plastic in whales bodies.

5 . As a research scholar at the Indian Institute for Science Education and Research, I once monitored birds that inhabited grasslands in Daying Ering Memorial Wildlife Sanctuary, a protected area in Northeast India. This habitat forms a part of one of the most bio-diverse places on Earth. Yet despite their ecological importance and uniqueness, most grasslands are classified by the Indian government as “wastelands”.

Ecosystems throughout the world are suffering from the effects of unchecked habitat loss and climate change. While all types of ecosystems—forests, grasslands, oceans, wetlands and deserts—feel these effects, there is evidence of bias (偏好) towards the conservation of forest biodiversity. This bi as hurts the preservation of other ecosystems, including the grasslands that make up 24 percent of the Indian landmass. These grasslands are home to important biodiversity and support the livelihoods of millions of people, yet are defined in India by their value in being turned into forests for fighting climate change.

Apart from being costly, the move overlooks the ecological and social value of grasslands by turning them into mono-culture forests, which do not provide the same ecological benefits. Yet, grasslands could be equally good at storing carbon.

India and other countries with substantial grasslands need to recognize, support and prioritize evidence-based scientific attempts that focus on grasslands by establishing grassland-specific restoration efforts, as well as by mapping their extent and the ecosystem services they provide for humans. The time is ripe for abandoning outdated labelings like “wastelands”.

Already, communities like the Todas and the Idu Mishmi people are protecting grasslands in India through collective action and local stewardship (管理), which are helping them connect with the grasslands. With the aim of preserving the richness of nature, the government must restore greater rights to local communities to manage grasslands. Grasslands are an important feature of an ecologically sound India, one that must be preserved for that value above all others.

1. What does the author want to stress in the second paragraph?

A．Forests are hotspots of biodiversity.	B．Deserts badly affect local ecology.
C．Climate change threatens ecosystems.	D．Grasslands need equal conservation.

2. What is the author’s attitude to Indian government’s move?

A．Tolerant.

B．Unclear.

C．Negative.

D．Favorable.

3. Who should be encouraged to protect the grasslands according to the text?

A．Government officials.	B．Local communities.
C．University researchers.	D．International agencies.

4. Which is the most suitable title for the text?

A．Stop Treating Grasslands as Wastelands	B．Take Active Steps to Limit Grasslands
C．Recognize the Polluted Grasslands	D．Transform Grasslands into Forests

6 . Animals deserve to live a safe and healthy life as much as humans do.     1     Some people try to get profit from everything and sometimes animals become victims. It is vital that we take action to protect animals. Below are some simple ways in which we can all contribute towards the protection of endangered animals.

Spread awareness. One way to protect endangered animals is to create awareness about them.     2     Having seminars (研讨会) is another way of creating awareness. Also, familiarize people around you with the importance of the animals in your surroundings. Our routine activities directly or indirectly influence their lifestyle.

Drive carefully in forest areas. It is important to watch the road when you are going through roads in forest areas. Many animals die while trying to cross the road because people do not pay attention to them.     3    

Avoid plastic items. Do you know what happens to a plastic bag thrown into a river?     4     Plastic is a big threat to wildlife. And we have to reduce the overconsumption of life-threatening products to protect the endangered species. Prevent plastic items such as bags and containers. Shop in a handmade woven bag and recycle the boxes.

    5     As a volunteer, you can offer support to animal rescue teams in your area. Such organizations are always short of funds and are looking for animal lovers to support the cause. Spending a portion of your daily or weekly schedule is one step towards saving wildlife and protecting endangered species.

A．Change your regular routine.

B．So, we highly suggest careful use of water.

C．Spend time rescuing animals in your locality.

D．Sadly, this does not have universal acceptance.

E．So we can save their lives by being more careful.

F．It is probably eaten by an adult turtle, choking it to death.

G．You can create local community groups that work for this cause.

8 . Having been born along the shores of Lake Victoria, the largest lake in Africa, Rahmina Paulette said she has witnessed firsthand the effects of climate change leading to great difficulties like drought and floods.

The 15-year-old Kenyan teenager said East Africa is highly dependent on Lake Victoria, but high pollution has led to poisoning of the water, soil erosion and health problems in people living around the lake.

As Paulette grew older, she realized she was slowly turning from being a witness to a victim of lake degradation. So, she decided to take action and save the lake in her own little way.

“Being an Indigenous person from Lake Victoria, I would like to help restore the ecosystem for my community that has an ancestral connection to the lake and also for the future generations to enjoy the cool breeze, good smells and see the biodiversity within Lake Victoria,” Paulette said.

In her efforts to end pollution in the lake, Paulette started an environmental organization called Kisumu Environmental Champions.

The young environmental champions carry out their activities during the weekends, and the group focuses on environmental conservation, climate change awareness and wildlife conservation.

The group, with about 200 members so far, has taken up the removal of the invasive plant hyacinth from the lake to make eco-friendly products. This project has earned Paulette international recognition. The group has made furniture, paper, cards, folders, document holders, bags and carton boxes from the water hyacinth.

With help from her mother, Paulette is trying to increase activities as she urges all Kenyans to incorporate eco-friendly ways in their day-to-day lives.

Apart from activists like Paulette, other organizations are casting the net wider in their attempt to save the lake. One such group is nonprofit Osienala in western Kenya. The organization has been cooperating with international partners such as those from China to save Lake Victoria.

1. What causes the problems of Lake Victoria?

A．Soil erosion.	B．Drought and flood.
C．Poisoning water.	D．Climate change and pollution.

2. What does the underlined word “degradation” in paragraph 3 probably mean?

A．Disappearance.

B．Expansion.

C．Damage.

D．Restoration.

3. How does Paulette help save Lake Victoria?

A．By planting more hyacinths.	B．By removing the hyacinths with her mother.
C．By building a factory to make products.	D．By setting up an organization.

4. What can we know about the Osienala?

A．It casts some nets over the lake.	B．It makes money while protecting the lake.
C．It seeks foreign cooperation to save the lake.	D．It’s another organization founded by Paulette.

9 . Finding a California condor in the wild would be the most unusual treat. perhaps even more unusual than finding a wolf in Yellowstone National Park. In fact, the wolf was what opened my eyes to the fact that humans could bring an animal back to the place where it had disappeared.

In 1987, there were only 27 California condors left, none of which were in the wild, only in captive breeding programs, It was those breeding programs that contributed to their population rise, enough that by 1991 some of them could be freed into the wild.

Still, the hope of seeing a California condor, which remains an endangered species, is very low, let alone getting a photo of one. California condor population dropped mostly due to human factors, such as poaching and living areas destruction-these are challenges California condors still face today.

Although this is just a bird’s-eye view of the challenges California condors face and there are many others, it is part of why the opportunity to work with the US Fish and Wildlife Service team and their partners helping their recovery is so special to me as a photographer. I am not only able to photograph the birds in their wild living areas, but also understand and record how difficult the work is of those people on the front lines of the protection.

I am grateful for the work of the team, and my hope is that California condor population will continue to rise allowing future generations an opportunity I never had when I first got here-to look to the sky and see one flying around.

1. What helped the increase of the California condor population in 1987?

A．Rules for hunters.	B．Captive breeding programs.
C．The improved natural environment.	D．The enlargement of wild living areas.

2. What does the author say about taking photos of a California condor in the wild?

A．It is difficult.

B．It is easy.

C．It is boring.

D．It is dangerous.

3. What did the author do when working with the US Fish and Wildlife Service team?

A．He guided ways for them.	B．He made records by photos.
C．He helped the birds to recover.	D．He rebuilt the birds’ living areas.

4. What is the best title for the text?

A．New Way, New Hope	B．Wolves and California Condors
C．A Photo of a California Condor	D．The California Condor’s Coming Back

10 . Overlooking the Biblioteca degli Alberi is Milan’s “Vertical (垂直的) Forest”: two residential tower blocks built in 2014 that are covered in 800 trees,4,500 shrubs and 15,000 plants. If this forest was planted on the ground, it would cover 20,000 m²— the size of three and a half football fields.

Each year the trees will absorb 10,000 tons of CO₂ and 57 tons of pollutants. They should also produce about 900 tons of oxygen. Boeri’s team of architects says the plants will also decrease the average air temperature, create noise barriers and boost biodiversity by creating a habitat for birds, insects and small animals.

It is not just physical wellbeing that is aided by large green structures in our cities. The team behind Sydney’s 100mhigh “vertical garden” claims it is a new form of “living architecture” that reminds us of “the restorative impact that nature has on our souls”. Just how restorative living near trees and plants is for our souls is open to debate; but studies in Germany have suggested that it can be extremely beneficial for our brains.

Scientists examined brain image sequences (顺序) of 341 elderly residents of Berlin, focusing particularly on the amygdala —the part of the brain that controls our fear responses and is responsible for stress and anxiety disorders. They found that there was strong connection between residents living within 1km of the forests on the edge of the city and those with the healthiest amygdala. A health y amygdala means being less likely to suffer from the stress and anxiety disorders controlled by this part of the brain. Mood and anxiety disorders are up to 56%higher in urban environments when compared to rural locations.

With two-thirds of the world’s population predicted to be living in cities by 2050, Milan’s Vertical Forest might show the world a way to create healthier, happier urban spaces.

1. What does Paragraph 2 mainly talk about?

A．The area of the city forest.	B．The way of building city forest.
C．The positive influence on the city forest.	D．The expected effect of the city forest.

2. What is the author’s attitude towards the Vertical Forest?

A．Favorable.

B．Suspicious.

C．Objective.

D．Indifferent.

3. Studies in Germany show that ______.

A．amygdala controls our fear responses

B．living near forests is beneficial for our souls

C．people near the forests are less likely to feel anxious

D．more residents will live in Vertical Forest in the future

4. Which of the following may the author agree with?

A．Cities are turning suitable for people to live in.

B．There is a worldwide focus on how to improve biodiversity.

C．Milan’s Vertical Forest becomes an example of urban biodiversity.

D．The Vertical Forest covers the size of three and a half football fields.