新理念綜合教程book4單元測試-免費閱讀
【正文】 However, nothing has ever equaled the magnitude and speed with which the human species is altering the physical and chemical world and demolishing the environment. In fact, there is wide agreement that it is the rate of change humans are inflicting, even more than the changes themselves, that will lead to biological devastation. Life on Earth has continually been in flux as slow physical and chemical changes have occurred on Earth, but life needs time to adapt — time for migration and genetic adaptation within existing species and time for the proliferation of new genetic material and new species that may be able to survive in new environments. 26. Which is the best title of the passage?A. The Variety of SpeciesB. The Rapid Destruction of the Tropical Rain ForestC. Species39。s ecosystem.D. Through hunting fish.請根據(jù)需要填入Script：正確答案：B得分：2分28. What determines which species survived and which died out?A. Slow chemical changes.B. Impact of human activities.C. Chance.D. Some physical event.請根據(jù)需要填入Script：正確答案：C得分：2分29. What will lead to biological devastation?A. Climatic or cosmic event.B. Chemical change.C. The rate of change humans are inflicting.D. Physical change.請根據(jù)需要填入Script：正確答案：C得分：2分30. The natural evolutionary change is different from change caused by humans in that it ____.A. is irreversibleB. affects the ecosystemC. occurs at a faster rateD. occurs at a much slower rate請根據(jù)需要填入Script：正確答案：D得分：2分Vocabulary and Structure請根據(jù)需要填入Script：Directions: Each of the following sentences is provided with four choices. Choose The destruction of our natural resources and contamination of our food supply continue occur, largely because of the extreme difficulty in affixing (把…固定) legal responsibility on those who continue to treat our environment with reckless abandon (放任). Attempts to prevent pollution by legislation, economic incentives and friendly persuasion have been net by lawsuits, personal and industrial denial and long delays—not only in accepting responsibility, but more importantly, in doing something about it. It seems that
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