新理念綜合教程book4單元測(cè)試(更新版)
【正文】 ived on Earth have survived to the present, and it was largely chance that determined which species survived and which died out.s Ecosystems請(qǐng)根據(jù)需要填入Script：正正確答案：D得分：2分27. According to the passage, how do humans destroy marine ecosystems?A. Through shipping a lot of goods.B. Through disposal and runoff poisonous waste.C. Through destroying Earth39。 Adaptation to New EnvironmentD. The Impact of Human Activities on Earth39。Certainly, there have been periods in Earth39。Biological diversity has bee widely recognized as a critical conservation issue only since the past two decades. The rapid destruction of the tropical rain forests which are the ecosystems with the highest known species diversity on Earth has awakened people to the importance and fragility of biological diversity. The high rate of species extinctions in these environments is jolting, but it is important to recognize the significance of biological diversity in all ecosystems. As the human population continues to expand, it will negatively affect one after another of Earth39。 3Within the various uses of the word today, nature may refer to the general realm of various types of living plants and animals, 4and in some cases to the processes associated with inanimate 5objects–the way that particular types of things exist and change 6of their own accord, such as the weather and geology of the the matter and energy of which all these things are posed.7 It is not often taken to mean the natural environment or wilderness–wild animals, rocks, forest, beaches, and in general those things that8 have not been substantially altered by human intervention, or which persist despite human intervention. For, example, manufactured objects and human interaction generally are not considered part of nature, unless qualified as, for example, human nature or the whole of nature. 9This more traditional concept of natural things, which can still be found today, implies a distinction between the natural and the artificial, 10with the artificial being understood as that which has been brought into being by a human consciousness or a human mind.
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