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  3. Why may GM foodstuffs be liked by people in the future? If we want to feed the world’s population in 2050, our food production

Why may GM foodstuffs be liked by people in the future? If we want to feed the world’s population in 2050, our food production

admin2013-04-15  71
问题 Why may GM foodstuffs be liked by people in the future?
If we want to feed the world’s population in 2050, our food production needs ______.
选项 A、to increase by 30 percent
B、an increase of 300 percent
C、to increase to 3 billion tons per year
D、an increase of three times
答案D
解析 细节题。由题干2050定位在第三段首句可知：到2050年，我们的食品产量须增长两倍才能跟上世界人口预计增至100到110亿的步伐。a three-fold increase“增长两倍”，即“增加到三倍”，故D正确。本题关键在于正确理解a three-fold increase的含义，B即是针对此处设计的强干扰项，an increase of 300%“增加了三倍”，即“增加到四倍”。
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