1 . They, stretching along the shore, swim quite lovely, looking for underwater greens to feed on. However, in these days, something is mixing with the sea grass that manatees(海牛)like to eat along Florida’s western coast. And it’s making them sick-even killing them.

It’s a poisonous form of algae, which is usually called “red tide” because of its color. Algae are plant-like organisms that live mainly in water. Most are harmless, but red tide is an exception. When it gets mixed in with the grass and the manatees eat it, they get so sick that they can’t even swim.

“They’re basically paralyzed(瘫痪的), and they become unconscious,” said Virginia Emonds, an animal care manager. Manatees are mammals and they need to surface often to breathe in air. If a manatee is paralyzed, it can’t swim and will drown.

As of Monday, the current red tide outbreak has killed at least 184 manatees since the beginning of this year. That has already beaten Florida’s record-high number for manatee deaths in a single year-and we still have nearly nine months to go!

The experts aren’t sure when the red tide outbreak will end. So many more manatees are in danger. The situation has gotten so desperate that Florida zoos have rescued at least a dozen manatees. You can find manatees anywhere from Brazil up to Florida-and throughout much of the Caribbean Sea.

In fact, the manatee is officially considered an endangered species. Thanks to the US government’s protection, Florida’s manatee population has grown to approximately 5,000 in recent years. But the red tide is threatening their survival. Some experts suspect that pollution from farms even might be fueling the red tide outbreak, because fertilizer that’s used on farms often winds up in water. And when that fertilized water runs off into the Gulf of Mexico, it makes things grow faster-just like on land.

1. The word “them” (in the first paragraph) probably refers to “______”.

A．endangered animals	B．manatees
C．algae	D．underwater greens

2. We can learn from the passage that the red tide______.

A．has caused damage to most of the underwater greens

B．serves to cultivate farm lands

C．destroy manatees’ ability to surface to breathe

D．give rise to 184 manatees’ deaths every month

3. Which of the following is NOT mentioned in the passage?

A．The current situation of manatees in Florida.

B．The potential cause of the expansion of the red tide.

C．The fatal effect of the poisonous red tide on manatees

D．The researchers’ efforts to prevent the red tide from spreading.

4. What does the passage mainly talk about?

A．The red tide has been changing the manatees’ habitat.

B．The red tide has been posing a threat to the manatees.

C．The manatee is officially an endangered species.

D．More efforts should be put to save the manatees.

3 . Ranchers(农场主) and environmental advocates haven’t always seen eye to eye, but the differences between the two aren’t as extreme any more, as more and more ranchers have come around to the understanding that taking good care of the land supports both economic stability and environmental health.

“For some, ranching was pursued in the past with an emphasis on raising beef at the expense of everything else,” says Bill Bryan of the Montana—based Rural Landscape Institute in a recent Christian Science Monitor. “As a matter of necessity, the old way of ranching is giving way to a new pattern. Raising animals for the dinner table isn’t an activity that has to be at odds with the environment.”

According to the nonprofit World Wildlife Fund (WWF), grazing (放牧)—when done right—is key to maintaining biological diversity and ecosystem health across the Northern Great Plains, across 183-million-acre expanse of rangelands spanning five US states and two Canadian provinces.

This vast landscape evolved in harmony with large herbivores (食草动物), such as bison and elk, and must be grazed in order to remain healthy, reports WWF, which works with hundreds of ranchers across the region as part of its Sustainable Ranching Initiative. “Without grazing, woody vegetation, such as juniper and cedar creeps in and kills plants that threatened species, such as grassland birds, need to survive.”

Not surprisingly, many of the ranchers that are following in the forebears’ footsteps have been using what we now call “sustainable ranching practices” for decades already. One example is rotational (轮流的) grazing, that is moving cattle herds more frequently to different pastures(牧场), so they don’t overgraze any one particular patch of land.

A newer “best practice” involves depositing a quarter to half inch of cattle wastes on grazed land to kick-start the soil chemistry below while also absorbing significant amounts of methane (沼气)—the most potent greenhouse gas—before it can head for the atmosphere. This technique is now becoming more commonplace as today’s ranchers care about reducing their carbon footprints like no generation before them.

1. In the first two paragraphs, what does the writer imply about the relationship in the past between ranchers and environmentalists?

A．They worked together to reduce the impact of grazing on the environment.

B．They didn’t look each other in the eyes when they meet.

C．They had great differences between each other.

D．They both agreed that raising animals for food benefits the environment.

2. The underlined phrase “be at odds with” (in Paragraph 2) most probably means ________ from the context.

A．be favourable to

B．be in disagreement with

C．stand a chance with

D．be unusual for

3. Which of the following is TRUE of grazing nowadays?

A．Many ranchers persist in prioritising raising cattle over anything else.

B．Grazing done in the right way helps biological diversity and ecosystem.

C．“Rotational grazing” has been recently employed to raise animals.

D．Grazing contributes to trees competing favourably with plants.

4. The writer mentioned the “best practice” to indicate ________.

A．grazing can be functional in the chemistry field

B．methane is another powerful greenhouse gas besides carbon dioxide

C．ranchers tend to remove their footprints as they are grazing

D．grazing has become more eco-friendly as time goes by

4 . Directions: Read the following passage. Summarize the main idea and the main point(s) of the passage in no more than 60 words. Use your own words as far as possible.

The problem of electronic waste

We have gradually come to realise that in two ways in particular, modern hi-tech can be bad for the planet. The first is its energy use; the worldwide scale of information technology is so enormous that electronics now produce fully two percent of global carbon emissions, which is about the same as the highly controversial emissions of aeroplanes. The other is the hardware, when it comes to the end of its natural life. This, increasingly, is pretty short. We have hardly noticed this important stream of waste, so much so that a Greenpeace report on the untraced and unreported e-waste two years ago referred to it as “the hidden flow”. We need to be aware of it.

The latest United Nations Environment Programme (UNEP) report estimates that worldwide, electronic waste is mounting by about 40 million tons a year. So what can we do about it?

The European Union has recognised the problem by adopting a key principle: producer responsibility. In other words, making it the duty of manufacturers of electronic goods to ensure their safe disposal at the end of their lives. In practice, an EU regulation now means that electronics dealers must either take back the equipment they sold you, or help to finance a network of drop-off points, such as public recycling sites. Its main feature is quite ambitious: it aims to deal with “everything with a plug”.

The new UN report suggests that all countries could do something about the problem with a change in design. Groups such as Greenpeace have led the way in putting pressure on major manufacturing companies to find substitutes for the toxic chemicals inside their products. Encouragingly, they have had some success in forcing them to develop non-poisonous alternatives to these. This may be the real way forward.

___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

6 . Directions: After reading the passage below, fill in the blanks to make the passage coherent and grammatically correct. For the blanks with a given word, fill in each blank with the proper form of the given word; for the other blanks, use one word that best fits each blank.

Boyan Slat, a Dutch inventor is cleaning the world’s most polluted rivers in an effort to save the oceans. He has made it his mission    1    (remove) plastic from the oceans. His organization, The Ocean Cleanup, has successfully started to clean the pollution that has been circling in the Great Pacific Garbage Patch. But millions more tons of plastic enter the oceans every year, almost all of it     2     (flow) from rivers.

Just 10 rivers are responsible for around 90% of all that plastic,     3    a 2017 study from the Helmholtz Centre for Environmental Research. “So     4    we focus on the worst rivers, we believe we can really have the fastest and most cost-effective way to close the tap and prevent more plastic from reaching the oceans in the first place,” Slat said.

The Ocean Cleanup is effectively using floating trash collectors called “Interceptors”. These solar-powered, autonomous systems use the rivers’ currents to guide the trash onto a conveyor belt that carry the waste to     5     (await) bins.

The first interceptor went to work in Jakarta, Indonesia, to pull plastic from a waterway called the Cengkareng drain. A second interceptor began collecting trash flowing down the Klang river in Kuala Lumpur, Malaysia. On the other side of the world,     6    Interceptor has recently started removing river pollution near the mouth of the Rio Ozama in the Dominican Republic.

“    7    the river is polluted, the fish die. Every year there are less fish,” Luis Peguero, a local fisherman, explained. When Peguero is lucky enough to reel in (收线拉起) a catch, it     8    not be safe for his family to eat. “You find stuff in the fish, especially the catfish. Trash, bottle lids, even a shoe. The fish can’t survive this,” said Peguero. To him, the modern trash-collecting catamaran (双体船) is a peculiar but welcome sight.

The Ocean Cleanup is working with the local governments and communities to help retrieve (取回) the plastic the Interceptors collect. “By stopping plastic in rivers, we hope to not only address the big global plastic pollution issue, but also really help make life better for the people    9    live near these problematic rivers,” said Slat.

The Ocean Cleanup’s goal is to tackle the thousand most polluted rivers within 5 years. Soon interceptors     10     (head) to Vietnam, Thailand, Jamaica and Los Angeles County in the United States.

“We are getting out tons of plastic every single day,” Slat said. “We accept that we won’t deliver magic in one go. But we’re doing this, step by step.”

8 . John F. Kennedy said, “We’re tied to the ocean. And when we go back to the sea, whether it is to sail or to watch — we’re going back from whence we came.” This quote is more poignant than you might think. We are inevitably linked to the ocean: All life on Earth originates from its depths — and it is crucial for our future, too.

Covering about 71 percent of Earth’s surface, the ocean is instrumental in the processes that keep us alive. Whilst the rainforests may be referred to as “the lungs of the planet,” it is actually the ocean that provides 50 to 80 percent of the oxygen we breathe. Through a “conveyor belt” action, it helps regulate Earth’s climate by transporting heat away from the equator (赤道), towards the poles to cool. The ocean also proves itself essential in the fight against climate change. It absorbs 50 times more carbon dioxide (CO2) than our atmosphere — or rather, it is not the ocean itself…but what lives within it.

Many forms of aquatic life naturally absorb and hold carbon. From microscopic phytoplankton (浮游生物) to gigantic whales, life of all shapes and sizes play a part in feeding these carbon sinks (areas that absorb more CO2 than they release). Perhaps one of the most incredible forms is the humble seagrass.

Across the globe, there are more than 70 different species of seagrass. It grows in the vast underwater meadows of 159 countries on six continents, covering 300,000 square kilometers — barely occupying 0.2 percent of the seafloor. This is where the super seagrass comes into its own: It absorbs ten percent of the ocean’s carbon each year and captures carbon up to 35 times faster than tropical rainforests.

Seagrass constructs its leaves and roots through the use of carbon, which it gains from water through the process of photosynthesis (光合作用) — and it holds on to this carbon even after its death. Dead plant material slowly decomposes on the ocean floor, which means that the carbon stored within it ends up getting buried under the seabed.

It is ironic that such an effective natural solution to climate change is itself under threat from climate change, as temperatures rise and more violent storms destroy seagrass beds. Pollution, the long-term development of coastlines, and unregulated fishing have all played additional roles in its decline.

Experts say that reversing the decline of seagrass will take an international effort. Fortunately, restoration missions are already underway. The Ocean Conservation Trust, for example, has opened a seagrass cultivation lab. Here, seagrass is grown in batches, using seed-bearing shoots that have been hand-picked by divers. In April 2021, 2,200 bags of these seedlings were planted on the seabed of Plymouth Sound, England. They are expected to flourish into a meadow the size of six football pitches.

Could seagrass be one of the Earth’s great survivors that will end up saving us all? As with most things, only time will tell.

1. What does the underlined word “instrumental” in the second paragraph mean?

A．important

B．alarming

C．consequential

D．mechanical

2. Which of the following statements shows the role seagrass plays in absorbing carbon after its death?

A．The carbon is taken in through photosynthesis by seagrass’s roots and leaves.

B．The carbon gets buried together with the decomposed plant material.

C．The carbon is eaten by various forms of aquatic life that feed on the dead plants.

D．The remaining carbon is cultivated in an artificial lab to convert to seagrass.

3. What is the best title for the passage?

A．Paradise for Aquatic Life	B．Ocean is Under Threat
C．the Irreversible Climate Change	D．Kelp (海藻) Can Help

9 . Are you worried about the planet and tired of waiting around for things to change? Go ahead and take a closer look at the various options available to volunteer for the environment!

Sustainable Agriculture If you decide to volunteer for a sustainable agriculture project, you’ll definitely learn some interesting sustainable farming techniques. You will be learning these techniques from locals or teaching them to the local farmers so they can implement these techniques on their own. Best Places to Volunteer: Central or South Africa, India, Nepal, Indonesia and the Philippines.

Marine Conservation Volunteers for marine conservation should naturally be attracted to water. It’s important that you don’t fear diving and have a strong interest in learning to dive during your stay. While volunteering, your task as a volunteer will be to help research, maintain and grow the unique marine biology. Best Places to Volunteer: The Bahamas, Cuba, Peru, South Africa, Indonesia, Spain and Italy.

Nature Conservation Conservation projects are dedicated to protecting the natural environment of a specific location. Tasks here may vary greatly depending on the program but it will require volunteers to study the environment and learn about the local wildlife species. You’ll be monitoring the environment and retrieving data while taking action to preserve the local species of fauna and flora. Best Places to Volunteer: Madagascar, the Maldives, South Africa, New Zealand and Russia.

Renewable Energy and Water Projects focused on energy and water create ways for communities to access sustainable energy and water sources. These programs are dedicated to designing system improvements and creating a sustainable supply of energy and water. It’s important for conservation volunteers to evaluate the needs of the community and implement actions to solve these issues. Best Places to Volunteer: Peru, Costa Rica, El Salvador, India and Cameroon.

Requirements: With so many subcategories and such a wide array of organizations, the required skill set will vary for each program. English is the main language on all projects so it’s important that conservation volunteers have a good understanding of English. For projects in South America, you will find it helpful to have a basic knowledge of Spanish.

1. If you want to volunteer for three projects in the same country, which country is the best choice?

A．Peru.

B．Indonesia.

C．South Africa.

D．India.

2. Which of the following statements is TRUE?

A．Volunteers can learn farming techniques by implementing these techniques on their own.

B．Volunteers need to study the environment and perform the same natural conservation tasks.

C．Volunteers should assess the requirements of the community before implementing actions.

D．Volunteers can sign up for marine conservation project even if they are afraid of the water.

3. What is required in common to be a volunteer in any of the above programs?

A．Farming techniques.	B．Marine biology.
C．Data retrieving.	D．The English language.