4 . When Hurricane Ian hit Florida, Karen Lauder refused to leave her home because she was wrong about the intensity(强度) of the storm. Karen is 84 years old and depends on a wheelchair to get around because she is missing a leg. Her son, Johnny Lauder, tried repeatedly to get her to leave, but she refused.

Johnny and his whole family live within a few blocks of one another. They kept in touch with Karen as the storm continued violently(猛烈地) outside, watching the water rising dangerously all around them. When Karen reported that the water in her house had reached her bottom, Johnny knew he had to take action.

First, Johnny ensured his sons and their pets were taken care of. Then, he jumped out of a window and began to swim. Johnny used to work as a rescue swimmer. He is obviously a strong swimmer, but the flood water was filled with dangerous materials. There was also a strong current (水流), and he had to swim against it for most of his trip to Karen’s. As he made his way through the water, Johnny stopped periodically to snap selfies(自拍) to show his worried family that he was okay.

Johnny was racing against the clock. He knew he only had a short period of time to get there before the water rose above Karen’s head. It took him 40 minutes to swim four blocks. The sound of Karen shouting inside was music to his ears!

“If it would’ve been 20 minutes later, she wouldn’t be here,” Johnny said.“She’s never been happier to see me.”

Karen is now safe, although she is in the hospital being treated for infections(感染) she got in the water. The family have all lost everything they owned, including their houses, but they’re grateful just to be here.

1. Why did Karen decide to stay in her house when Hurricane Ian came?

A．She had nowhere to go.

B．She was too old to move.

C．She thought the storm was not violent.

D．She lost her wheelchair and was unable to leave.

2. Why did Johnny take selfies along the way to Karen’s home?

A．To record his swimming trip.	B．To show off his swimming skills.
C．To warn other rescuers of danger.	D．To report his safety to his family.

3. How did Johnny’s family keep in touch in the storm?

A．By shouting.	B．Over the phone.
C．Through e-mail.	D．With other’s help.

4. How did Johnny feel when he heard Karen shouting?

A．Curious.

B．Frightened.

C．Confused.

D．Relieved.

7 . Researchers and environmentalists have been pushing for clean energy, as well, contending with the rising threat of climate change. An increasingly researched renewable resource is called Ocean Thermal Energy Conversion (OTEC), in which the sea’s temperature variations are used to produce power. On the surface of the ocean, the temperatures are much warmer compared to the seafloor. It gets considerably colder the deeper you go because the sunlight cannot reach the bottom. These temperature differences are most noticeable in the summer when the sun is present for a majority of the hours of the day. To put it simply, OTEC uses a series of pipes that take the cooler water out in the depths of the ocean. The warm water on the ocean’s surface helps heat the cool water, which then vaporizes (蒸发) a fluid, and as a result, turns a turbine (涡轮机) to produce electricity.

Three types of ocean heat renewable energy systems are being developed and researched. An OTEC closed-cycle is perhaps the most common and well-researched, consisting of a condenser (冷凝器), evaporator, pumps, turbine and generator. There are also open systems and hybrid systems.

Systems work by pumping the warmer surface water through an evaporator containing a working fluid with a low boiling point, such as ammonia. Once the fluid vaporizes, it is used to drive a turbine and generator. From there, the vaporized fluid turns back into a liquid through a condenser, cooled by the cold, deep ocean water that pumps up from the depths. The OTEC systems that use seawater can use condensation to make water without salt.

OTEC systems need to place technology about 1 kilometer below the surface of the water. The cold water intake pipe is in the deepest area, and the piping where warm water enters is above sea level. The pumps are needed to move warm water into the system, and a heat exchanger is required to evaporate the fluid. Condensers condense the steam produced in the system, and a marker keeps the entire system afloat.

Energy is essential for almost all human activities. If the world wants to avoid an energy crisis, people need to begin relying on renewable energy. Fortunately, the three types of OTEC can provide energy for large populations.

1. What does OTEC technology depend mainly on to generate renewable power?

A．The depths of the ocean.	B．The vast surface of the ocean.
C．Seawater’s temperature differences.	D．The hot temperature in the summer.

2. What does paragraph 3 mainly talk about?

A．The principle of OTEC technology.

B．The progress of OTEC technology.

C．The importance of the renewable energy systems.

D．The differences among the renewable energy systems.

3. What can we learn about OTEC technology from paragraph 4?

A．The heat exchanger can produce power.

B．The cold water pipe is in the depths of the sea.

C．The deeper in the ocean, the better the technology is.

D．The warm water needs evaporating in a condenser.

4. What is more likely to be discussed in the following paragraph?

A．The energy crisis in the future.

B．The bad influence of human activities.

C．The benefits of Ocean Thermal Energy Conversion.

D．The popularity of other renewable energy sources.

10 . The following are some unsung heroes bringing a unique viewpoint and approach to the global challenge of environmental conservation.

Greta Thunberg

Greta Thunberg, a young environmental voice from Sweden, has not only caught global attention but transformed it into a powerful movement. Through her “Fridays for Future” initiative, Greta encourages students worldwide to advocate for climate action, calling for the urgency of addressing climate change. Her touching speeches at international forums, coupled with a refusal to accept inaction have made her a symbol of youth-driven environmental advocacy.

Wangari Maathai

The late Nobel Peace Prize winner from Kenya left a permanent mark through her pioneering Green Belt Movement. This grassroots initiative empowered communities, particularly women, to fight against deforestation through tree planting. Maathai’s legacy lives on in the millions of trees planted across Africa, reflecting her belief that sustainable development starts at the grassroots level, with communities actively engaged in preserving their environment

Isaton Ceesay

Isatou Ceesay, an environmentalist from The Gambia, has emerged as a pioneer in the fight against plastic pollution. Recognizing the detrimental impact of plastic waste on local communities and ecosystems, Ceesay founded the “Women’s Initiative Gambia”. Through creative recycling initiatives, she empowers women to repurpose plastic waste, promoting economic independence within communities.

Ma Jun

Ma Jun began his career as an investigative journalist, but has quickly risen to become an outstanding Chinese environmentalist, known for his pioneering work in water pollution control. As the founder of the Institute of Public and Environmental Affairs(IPE), Ma Jun developed the China Water Pollution Map, an interactive online tool that tracks water quality data and exposes pollution sources across the country.

1. What group of peoples “Friday’s for Future” for?

A．Women.

B．The grassroots.

C．Young students.

D．Poor farmers.

2. What does Green Belt Movement deal with?

A．Preserving trees.	B．Community cooperation.
C．Plastic pollution.	D．Addressing climate change.

3. Who cares about the cleanliness of water?

A．Greta Thunberg.

B．Wangari Maathai.

C．Isatou Ceesay.

D．Ma Jun.