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  3. Thomas Malthus published his Essay on the Principle of Populationalmost 200

Thomas Malthus published his Essay on the Principle of Populationalmost 200

游客2024-12-04  9
问题    Thomas Malthus published his Essay on the Principle of Population
almost 200 years ago. Ever since then, forecasters have being warning          【M1】 ______
that worldwide famine was just around the next comer. The fast-growing
population’s demand for food, they warned, would soon exceed their             【M2】 ______
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 spots like present-day Somalia,    【M3】 ______
and occasional years of good harvests, the world’s food crisis has remained    【M4】 ______
just around the comer. Most experts believe this can continue even as ff       【M5】 ______
the population doubles by the mid-21st century, although feeding l0 billion
people will not be easy for politics, economic and environmental reasons.      【M6】 ______
Optimists point to concrete examples of continued improvements in yield.
In Africa, by instance, improved seeds, more fertilizers and advanced          【M7】 ______
growing practices have more than double com and wheat yields in an             【M8】 ______
experiment. Elsewhere, rice experts in the Philippines are producing
a plant with few stems and more seeds. There is no guarantee that plant        【M9】 ______
breeders can continue to develop new, higher-yielding crop, but most           【M10】______
researchers see their success to date as reason for hope. [br] 【M6】
选项
答案 将politics改为political。
解析 根据结构，这里and连接的是三个并列的形容词，因此politics要用形容词，例如：Liberty is not a means to a higher political end．It is itself the highest political end．自由并不是达到更高政治目标的手段，其本身就是最高政治目标。
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