2013年6月大学英语六级改错真题模拟(10)
2013年6月大学英语六级改错真题模拟(10)
Thomas Malthus published his "Essay on the Principle |
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of Population" almost 200 years ago. Ever since then, |
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forecasters have being warning that worldwide famine was |
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S1. _____ |
just around the next corner. The fast-growing population's |
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demand for food, they warned, would soon exceed their |
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S2. _____ |
supply, leading to widespread food shortages and starvation. |
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But in reality, the world's total grain harvest has risen |
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steadily over the years. Except for relative isolated trouble |
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S3. _____ |
spots like present-day Somalia, and occasional years of |
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good harvests, the world's food crisis has remained just |
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S4. _____ |
around the corner. Most experts believe this can continue |
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even as if the population doubles by the mid-21st century, |
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S5. _____ |
although feeding I0 billion people will not be easy for |
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politics, economic and environmental reasons. Optimists |
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S6. _____ |
point to concrete examples of continued improvements |
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in yield. In Africa, by instance, improved seed, more |
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S7. _____ |
fertilizer and advanced growing practices have more than |
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double corn and wheat yields in an experiment. Elsewhere, |
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S8. _____ |
rice experts in the Philippines are producing a plant with few |
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S9. _____ |
stems and more seeds. There is no guarantee that plant |
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breeders can continue to develop new, higher-yielding |
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crop, but most researchers see their success to date as reason |
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S10. _____ |
for hope. |
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S1. beingàbeen S2. theiràits
S3. relativeàrelatively S4. goodàbad
S5. asà去掉 S6. politicsàpolitical
S7. byàfor S8. doubleàdoubled
S9. fewàmore S10. reasonàthe reason