2013年大學(xué)英語六級改錯試題及答案（5）

　　Thomas Malthus published his “Essay on the

　　Principle of Population” almost 200 years ago. Ever since then,

　　forecasters have being warning that worldwide famine was (S1)

　　just around the next corner. The fast-growing population’s

　　demand for food, they warned, would soon exceed their (S2)

　　supply, leading to widespread food shortages and starvation.

　　But in reality, the world’s total grain harvest has risen

　　steadily over the years. Except for relative isolated trouble (S3)

　　spots like present-day Somalia, and occasional years of

　　good harvests, the world’s food crisis has remained just (S4)

　　around the corner. Most experts believe this can continue

　　even as if the population doubles by the mid-21st century, (S5)

　　although feeding 10 billion people will not be easy for

　　politics, economic and environmental reasons. Optimists (S6)

　　point to concrete examples of continued improvements

　　in yield. In Africa, by instance, improved seed, more (S7)

　　fertilizer and advanced growing practices have more than

　　double corn and wheat yields in an experiment. Elsewhere, (S8)

　　rice experts in the Philippines are producing a plant with few (S9)

　　stems and more seeds. There is no guarantee that plant

　　breeders can continue to develop new, higher-yielding

　　crop, but most researchers see their success to date as reason (S10)

　　for hope.

　　參考答案：

　　S1. being → been

　　S2. their → its

　　S3. relative → relatively

　　S4. good → bad

　　S5. as → 去掉

　　S6. politics → political

　　S7. by → for

　　S8. double → doubled

　　S9. more → fewer

　　S10. reason → the reason

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