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  3. What we don’t know or refuse to recognize is that modern man has been altering his total environment so swiftly and suddenly tha

What we don’t know or refuse to recognize is that modern man has been altering his total environment so swiftly and suddenly tha

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问题     What we don’t know or refuse to recognize is that modern man has been altering his total environment so swiftly and suddenly that the whole "great chain of life" on this planet is in danger.
    All of us live on a tiny spaceship carrying with it its own limited resources for survival.What we have now is all we will ever have to keep us alive.
    But man has been harming this system. He cannot help it. Everything we do alters our environment: the ways we grow food and build shelter and create what we call "culture" and "civilization".
    World population is growing at such a rate that by the year 2050 nearly seven billion people will live on the earth.Industrialization has added its own burden to the population pressure. The more we produce and consume, the more waste products we discharge into the air and water and land around us, where they do not disappear, but last forever in one form or another. Great progress is being made in the productivity of our soil, yet agriculture is now taking more nutrients (营养) from it than are being replaced each year.
    "Ecology", the study of the relationship between life systems and their environment, is what everybody on this planet must now start thinking about quickly if we are to avoid destructive changes within the closed system of our spaceship.
According to the passage, the development of industry and agriculture seems ______.
选项 A、only a burden to the human society
B、the result of the rapid growth of population
C、more harmful than beneficial
D、not likely to slow down
答案C
解析 本题为细节辨析题。由文章可知，在工业上，我们生产得越多，我们释放到空气、水、土壤中的废物也就越多，这些废物不会消失，会以某种形式永远存在。在农业上，人们通过努力使得土壤的种植产量增多，然而也就使得土壤中大量的养料被吸取。因此，工农业的发展弊大于利。
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