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  3. Bamboo reproduces in two ways. It flowers and produces seeds. It also produces new growth from its roots. Bamboo plants growing

Bamboo reproduces in two ways. It flowers and produces seeds. It also produces new growth from its roots. Bamboo plants growing

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问题     Bamboo reproduces in two ways. It flowers and produces seeds. It also produces new growth from its roots. Bamboo plants growing from its roots are called ZhuSun in China. Bamboo shoots are dug up and replanted in the field. Farmers harvest the leaves. They feed them to their animals.
    When you think about the growth of human population over the last century or so, it is all too easy to imagine it merely as an increase in the number of humans. But as we【S1】______. so do all the things associated with us,【S2】______our livestock (家畜). At present, there are about 1.5 billion cattle and domestic buffalo and about 1.7 billion sheep and goats. With pigs and poultry, they form a【S3】______part of our enormous biological footprint upon this planet.
    Just how enormous was not really apparent until the【S4】______of a new report, called "Livestock’s Long Shadow," by the Food and Agriculture Organization of the United Nations.
    Consider these numbers. Global livestock grazing (放牧) and feed production use "30 percent of the land surface of the planet." Livestock — which consume more food than they【S5】______— also compete directly with humans for water. And the drive to expand grazing land destroys more biologically sensitive terrain, rain forests【S6】______. than anything else.
    But what is even more striking, and alarming, is that livestock are【S7】______for about 18 percent of the global warming effect, more than transportation’s【S8】______. The culprits (罪魁祸首) are methane — the natural result of bovine digestion — and the nitrogen emitted by manure. Deforestation of grazing land adds to the effect.
    There are no easy trade-offs when it comes to global warming — such as cutting back on cattle to make room for cars. The human【S9】______for meat is certainly not about to end anytime soon. As "Livestock’s Long Shadow" makes clear, our health and the health of the planet depend on pushing livestock production in more【S10】______directions.
[A] publication    [F] multiply    [K] liable
[B] waste          [G] critical    [L] sustainable
[C] contribution   [H] passion     [M] responsible
[D] certainly      [I] concerning  [N] including
[E] yield          [J] available   [O] especially
【S4】
选项
答案A
解析 空前的the和空后的of表明，本空应填一名词。在备选名词项中，与空后的a new report属于同一个语义场，且与report的发出方联合国粮农组织的身份一致的是[A]publication“公布”。[C]contribu-tion作“(投给报刊等的)稿件”解时放在此处与联合国粮农组织的身份不一致，故排除。
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大学英语四级

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