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  3. Rainforests are called the lungs of the planet, because they absorb carbon dioxide, greenhouse gas, and produce oxygen, which is

Rainforests are called the lungs of the planet, because they absorb carbon dioxide, greenhouse gas, and produce oxygen, which is

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问题     Rainforests are called the lungs of the planet, because they absorb carbon dioxide, greenhouse gas, and produce oxygen, which is【C1】______important to our well-being.【C2】______the fact that rainforests cover only 12 percent of the land-area of the Earth, they are home to【C3】______of the world’s plant and animal species, and for local populations they are a【C4】______source for food, fiber, fuel and medicines. Tropical forests【C5】______global and regional climate-systems, and【C6】______moisture into the atmosphere, which then returns to earth in the form of rain.
    【C7】______, where the land has been logged, there are no longer trees to produce the rain cycle which cools down the atmosphere, or to reduce carbon dioxide levels,【C8】______ to climate change. Because of tropical deforestation, animal and plant【C9】______is disappearing, and at least one species becomes【C10】______every day.
    Now that people are no longer【C11】______of the destructive lumbering of forest, the United States has partnered with the private sector, other governments and civil society organizations to form the Tropical Forest Alliance 2020(TFA 2020). The alliance aims to【C12】______ and coordinate actions by all partners to reduce tropical deforestation【C13】______ to key agricultural commodities such as palm oil, soy, beef, and paper. In support of TFA 2020, USAID【C14】______in early July that it will contribute $5.5 million to a separate but related public-private partnership with the World Resources Institute. With the help of this new tool, TFA 2020 partners will be able to more easily monitor tropical deforestation, and then quickly【C15】______ the information.
    The United States has consistently worked to【C16】______ the conservation of tropical forests by advancing【C17】______ and cooperative approaches, developing【C18】______ technical expertise and services, and【C19】______ leadership. With the new multi-national, public-private TFA 2020 partnership, we look forward to further increasing the【C20】______of our engagement.
【C6】
选项 A、dismiss
B、emit
C、distribute
D、release
答案D
解析 动词辨析题。句意同上。四个动词各有侧重点，dismiss表示“解雇，解散”，主要是针对人，例如：Theboss threatened to dismiss all the employees who had expressed their sympathy for the strike．but it’s allbluff．(老板威胁说要解雇所有同情罢工的员工，但是这不过是恐吓而已。)emit表示“发出，放射”，通常指发出气味、光、热、粒子等，例如：Do the radio waves that cell phones emit pose a threat to health?(手机发出的无线电波是否对身体健康构成了威胁?)distribute“分配，散布”，常指把东西分发给所属者或应得者，例如：The way to reduce unemployment and to live better is to distribute the available work byworking fewer hours per week．(减少失业和生活得更好的办法是依据每周更少的工作时间分配可获得的工作。)release表示“放出，放松，排放”，例如：It will absorb and release moisture and provide bothventilation and warmth．(它可以吸汗散潮，既通风又保暖。)原文中是指释放出水汽，所以[D]release为答案。
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