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题型:阅读理解-阅读单选 难度:0.65 引用次数:88 题号:21050505

Seaweed farming, which has a long history in Asia, is spreading around the globe. Over the past 30 years, according to the Food and Agriculture Organization, world production of seaweed has boomed more than six times to over 35 million tonnes, with emerging markets in the Americas, Europe and Africa. The most recent numbers, from 2019, show that North America produces some 23,000 tonnes of wet seaweed per year.

Cascadia, which was founded in 2019, claims to be the largest cultivator in North America, with a harvest of 200 wet tonnes so far this year. Farms, small and large, are popping up fast. Many see this expansion as a good news story. The Global Seaweed Coalition (GSC)—a research and industry group—says humanity could, and should, be harvesting 15 times more seaweed by 2050. Coalition member Vincent Doumeizel is a senior adviser on oceans to a United Nations program working toward corporate sustainability. He talks about a “seaweed revolution” to feed the growing global population—a transformation as dramatic as the ancient shift to land-based agriculture. “In the ocean, we are still hunter-gatherers,” he says.

The Global Seaweed Coalition estimates that seaweed (high in protein and other nutrients) could add 10 percent to the world’s food supply using just 0.03 percent of the ocean surface. One recent study concluded that substituting 10 percent of human food with seaweed by 2050 could spare 110 million hectares of land for purposes other than agriculture. That’s about two percent of all farmland today.

Advocates like Doumeizel cast seaweed as the solution to many social and environmental problems: The industry requires no fresh water, pesticides or fertilizers; it doesn’t take up any land; it can overlap (重叠) with other uses of the ocean like offshore wind farms; it can help to decrease poverty in the developing world; and some companies, including Cascadia, are collaborating with local communities.

Seaweed creates a rich habitat for sea life, soaks up carbon dioxide, counter-acts acid and absorbs run-off nutrients, although evidence quantifying how farms, specifically, help with such things remains scarce.

1. What can we learn from paragraph 1?
A.New seaweed farming markets increase in Africa.
B.Seaweed farming in Europe is earlier than in Asia.
C.Seaweed production is over 35 million in North America annually.
D.Seaweed production of Asia was about 6 million tonnes 30 years ago.
2. According to the GSC, what is the potential of seaweed as a food source?
A.Saving two percent of agricultural land for other applications.
B.Adding 15 percent to the world’s food supply by 2050.
C.Bringing more nutritious food and greater profits to GSC.
D.Providing human beings with more high-fat food.
3. What is an advantage of seaweed farming mentioned in the text?
A.It helps increase the diversity of sea plants.
B.It solves the pollution problems of the ocean.
C.It prevents ocean plant species from dying out.
D.It can be combined with other uses of the ocean.
4. What does the underlined word “scarce” mean in the last paragraph?
A.Obvious.B.Insufficient.C.Ambiguous.D.Invalid.
【知识点】 说明文 可持续农业

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