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Why is the close planting of trees of the same species avoided in modern orchard
Why is the close planting of trees of the same species avoided in modern orchard
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2023-08-03
30
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问题
Why is the close planting of trees of the same species avoided in modern orchards and forests? [br] Which of the following can be inferred from the passage?
选项
A、Advances in medical science made disease unable to regulate human population growth any longer in many parts of the world.
B、Medical cures have prolonged life but upset the reproductive age group by increasing many populations.
C、In Australia, the use of the myxomatosis virus hardly controlled the rabbit population with increasing resistance to the disease.
D、It is discovered all strains of virus can parasitize and kill the bacteria without harming the organism that the bacteria has infected.
答案
A
解析
推断题。见文章第二段最后三句The relative stability of the human population has been upset by advances in medical science.No longer does disease regulate human population growth in many parts of the world.Medical cures have prolonged life and upset the age structure of many populations,increasing the proportion of individuals in the reproductive age group,所以答案为A。
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