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题型:阅读理解-阅读单选 难度:0.65 引用次数:94 题号:22749871

Sharks and their relatives are some of the most threatened vertebrates (脊椎动物) on Earth. Coral reefs (珊瑚礁) provide homes for countless fish species that are vital for fisheries and are therefore an especially important ecosystem for humans — and one where the decline of shark populations seems to be especially sharp.

The study by Simpfendorfer with his team is the result of an act of worldwide cooperation called the Global FinPrint Project. The data analyzed include more than 20,000 hours of standardized underwater video taken at nearly 400 reefs in 67 countries around the world. It reveals declines of 60 to 73% of once-abundant coral reef shark species at reefs around the world. The global conservation status of sharks and rays (鳐鱼) is worse than a decade ago and is even more concerning for some groups of sharks.

However, the findings of Simpfendorfer with his team include signs of hope and a clear path forward. Their result s show that although shark populations in many reefs had declined, some health y reef shark populations remained. The reefs with healthier shark population s had some important similarities: they tended to be in the waters of high-income countries with stronger natural resource management laws and rules. Unfortunately, such countries were relatively rare, and lower-income countries tended to have fewer resources for eco-friendly management.

The most unexpected result of the study is that a decline or complete loss of shark species in one reef was not always associated with similar changes in nearby reefs. They found that one reef could be overfished so badly that a once-common reef shark species was totally gone, but another reef a short distance away could have healthy populations of that same species.

The problem is clear -animals that provide ecosystem services that are vital for human food security and livelihoods are disappearing at an alarming rate. The loss of sharks and the ecosystem services they provide represents an ecological disaster that can cause substantial harm to humans.

1. What can we learn about the study from the second paragraph?
A.It was directed by the Global FinPrint Project.
B.It was to find out the reasons for ocean pollution.
C.It analyzed data about shark species in coral reefs.
D.Certain sharks were found endangered in the study.
2. Why could healthy reef shark populations remain in some areas?
A.Citizens there had a strong environmental awareness.
B.Science and economics were improving fast in such areas.
C.The waters in these areas were suitable for sharks to live in.
D.They were well-developed areas with strict environmental laws.
3. What can be inferred from the last two paragraphs?
A.Humans and animals coexist in ecosystem.
B.Overfishing is a contributing factor to the decline of sharks.
C.It’s uncertain whether humans cause the decrease of sharks.
D.Distances between reefs affect the number of shark species.
4. What’s the text mainly about?
A.A sharp decline of reef sharks.B.Possible recovery of reef sharks.
C.Global cooperation of ocean protection.D.Amazing discovery of coral reefs.
【知识点】 动物 科普知识 说明文

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【推荐1】Lizzy Greene’s official website says it all: "Actress, Artist & Animal Lover. " At 13, Lizzy has performed in children’s theater, and she is a trained gymnast. She is most known for her role as Dawn Harper on Nickelodeons Nicky, Ricky, Dicky & Dawn. Now Lizzy is taking on another role—as a voice for animals.

    1     She grew up with dogs, and her family’s pet is a 110-pound German shepherd(牧羊犬) named Jett. On the show, Lizzy shares the screen with a lovable 20-pound dog named Squishy Paws. In second grade, she stationed herself outside her school to ask for donations (捐款) to a local animal shelter.     2    

Now Lizzy is also speaking out for farm animals. She’s recently joined The Humane Society of the United States, Meatless Monday movement. She encourages young people to take a break from eating meat on Mondays.     3     And she’s encouraging the under-20 crowd to take part.

Lizzy knows that raising animals for meat causes pollution, uses a lot of natural resources (资 源) like water and also harms animals.     4     Choosing meat-free meals one day a week is also a great way to feel healthy.

Many K-12 schools, universities and hospitals nationwide have started Meatless Monday programs.

“It’s so easy to love animals.” Lizzy says.     5     For some kid-and-animal-friendly meatless recipes(食谱), visit humonesociety. org/kindnezws.

A.It’s easy to eat animal-friendly foods, too.
B.Lizzy has only just begun her bright career.
C.Animals have always been a big part of Lizzy's life.
D.And Lizzy says she has always wanted to help animals.
E.Cutting meat from our diet once a week helps the environment and animals.
F.Kids'breakfast can be as simple as trying a vegetable burger instead of a hamburger.
G.After the movement, Lizzy says she wants to save a few more lives and force humans to eat healthier.
2019-08-26更新 | 255次组卷
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文章大意:这是一篇新闻报道。文章主要介绍了以金枪鱼为例子的一些物种的种群数量正在恢复,但是仍有很多其他物种濒危,我们应该继续努力。

【推荐2】In a world on fire and underwater, scientists have announced some good news: Several important tuna species have stepped back from the edge of extinction.

Two bluefin tuna species, a yellowfin, and an albacore are no longer seriously endangered or have moved off the leading international list of endangered species entirely.

The unexpectedly fast recovery speaks to the success of efforts over the past decade to end overfishing. But tuna are not the only species scientists are thinking carefully at the 2021 World Conservation Congress in Marseille, France, which is organized by the International Union for Conservation of Nature (IUCN). Researchers warn that many other sea species continued to be imperiled. For example, more than a third of the world’s sharks are still threatened with extinction due to overfishing, habitat loss, and climate change.

“I think the good news is that sustainable fishing industry are possible,” says Beth Polidoro, a biologist at Arizona State University. “We can eat fish without reducing the population to the point where it is on the road to dying out or extinction.” At the same time, she warns that the recovery should not encourage us to catch as many fish as we want. “We need to keep doing what’s working.” Polidoro adds.

The IUCN, which determines the world’s most endangered species on its Red List of Threatened Species, also announced at the meeting that some animals are moving in the other direction, onto the Red List. Like the Komodo dragon, a lizard, it is at particular risk from climate change.

Of course, the work of protection is never over, and it will require close and continuous attention to make sure neither tuna nor Komodo dragons return to the edge of dying out. But for now, people can celebrate a few wins for the animal world.

1. What is the good news about tuna?
A.They have been removed from the list of endangered species.
B.The fishing of tuna has been put to an end completely.
C.The population of some tuna species has recovered.
D.The number of some tuna species increases slowly.
2. What does the underlined word “imperiled” in paragraph 3 mean?
A.Dangerous.B.Sustainable.C.Disappointing.D.Endangered.
3. What can we learn from Beth Polidoro’s words?
A.We can fish tuna as much as we want.B.Protecting tuna is a long way to go.
C.We shouldn’t encourage tuna fishing.D.The population of tuna will reduce.
4. Why does the writer mention “the Komodo dragon” in paragraph 5?
A.To introduce a topic.B.To make a comparison.
C.To explain an idea.D.To give an example.
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【推荐3】Western conservation groups are seeking stricter laws to deal with trade in endangered wildlife, but Dr. Paul Jepson warns that this isn’t the best solution. He specially mentions the case of the Bali starling (八哥). Bringing in tougher laws created unexpected outcomes, which contributed to the bird’s extinction in the wild in 2006.

He said that the traditional law enforcement (执行) approach that prohibited ownership of the Bali starling in the 1980s and 1990s increased rather than reduced the demand for wild-caught Bali starlings. The bird has become a popular gift among the rich of Indonesia, who can gain more status by owning one.

Instead, a case-by-case analysis might be needed. Last year, he said, a bird association set up a network of breeders (饲养者) among the owners of Bali starling on the island of Java. By introducing a “crowd-breeding” model, it transformed the bird into a species whose price and source of supply were publicly known. This lessened the status of keeping such birds and thereby reduced their profitability to black market suppliers.

Another case was on Nusa Penida, an island southeast of Bali. A Balinese conservation group planned to release starlings on the island. Some tried to block the plan, saying the island was outside the birds’ native zone. Eventually, the Governor of Bali came up with a plan. The starlings were given to a local temple as a ceremonial offering before they were released. This gave the Bali starling status as a “sacred bird”, giving them protection under customary laws. Now the released starlings established a breeding population on Nusa Penida.

Dr. Jepson commented, “I do not want to condemn the international approach seeking tighter law enforcement, but this case study shows we should not oversimplify how we respond to the problem of the wildlife trade. There is a growing body of evidence that shows more different approaches are sometimes needed to fit with the local social and political realities. We should tailor solutions on more of a case-by-case basis.”

1. What might have sped up the wild Bali starling’s extinction in 2006?
A.The bad natural environment.
B.The side effect of strict protection laws.
C.The debate over the wildlife trade.
D.The popularity of the bird in the world.
2. Why was the “crowd-breeding” model introduced?
A.To make the Bali starling less profitable.
B.To cut off the supply to the black market.
C.To increase the demand for the Bali starling.
D.To block the strict laws passed by the government.
3. What can we learn from the case on Nusa Penida?
A.The starlings were protected as a result of stricter laws.
B.It is unwise to release starlings outside their native zone.
C.The starlings were endangered due to their reduced status.
D.Attaching spiritual value to the starlings helps protect them.
4. Which of the following will Dr. Jepson probably agree with?
A.Stricter enforcement is needed to protect biodiversity.
B.Those who seek tighter law enforcement should be blamed.
C.There’s no one-size-fits-all approach to the wildlife trade problem.
D.The problem of wildlife trade should be treated with determination.
2019-12-18更新 | 147次组卷
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