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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.
【C11】
选项 A、aware
B、ignorant
C、tolerable
D、resistant
答案B
解析 形容词辨析题。句意为：现在人们不再对雨林的滥伐熟视无睹，美国已与私营部门、其他国家的政府和公民社会组织合作，组成了热带雨林联盟2020(简称TFA2020)。此处填入的形容词是描述人们对砍伐热带雨林的态度，根据下文提示，为了应对这一问题，成立了相应的组织，所以人们的态度不再是熟视无睹的，[B]ignorant“忽视，不懂”为答案。aware“意识到的”；tolerable“可容忍的”；resistant“抵抗的，反抗的”，均不符合原文语境，所以排除。
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