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The shorter growing seasons expected with climate change over the next 40 years will endanger hundreds of millions of already po
The shorter growing seasons expected with climate change over the next 40 years will endanger hundreds of millions of already po
admin
2022-10-25
62
问题
The shorter growing seasons expected with climate change over the next 40 years will endanger hundreds of millions of already poor people in the global tropics, say researchers working【C1】________the world’s leading agricultural organisations.
The effects of climate change are likely to be seen across the entire tropical【C2】________but many areas previously considered to be【C3】________food secure are likely to become highly【C4】________to droughts, extreme weather and higher temperatures, say the researchers with the Consultative Group on International Agricultural Research.
Intensively farmed areas【C5】________northeast Brazil and Mexico are likely to see their【C6】________growing seasons fall below 120 days, which is critical for crops【C7】________corn to mature. Many other places in Latin America are likely to【C8】________temperatures that are too hot for bean【C9】________, a staple in the region.
The impact could be【C10】________most in India and southeast Asia. More than 300 million people in south Asia are likely to be affected even with a 5% decrease in the【C11】________of the growing season.
Higher peak temperatures are also expected to take a heavy【C12】________on food producers. Today there are 56 million crop-dependent people in parts of west Africa and India who live in areas where, in 40 years, maximum daily temperatures could be【C13】________than 30℃ . This is【C14】________to the maximum temperature that beans can tolerate,【C15】________corn and rice yields suffer when temperatures【C16】________this level.
"We are starting to see much more clearly【C17】________the effects of climate change on agriculture could【C18】________hunger and poverty," said research leader Parti Kristjanson. "Farmers already【C19】________variable weather by changing their planting schedules. What this study suggests is that the speed of climate【C20】________and the magnitude of the changes required to adapt could be much greater."
【C15】
选项
A、until
B、since
C、while
D、unless
答案
C
解析
语义逻辑题。此处填入逻辑连词,表明空格前后两分句间的关系。上一分句讲到超过30℃是大豆所能承受的最高温度,这里则讲一旦温度改变,玉米和大米的产量就会受影响,可见前后存在对比,能表示对比关系的只有C项while,意为“而”。A项until “直到……才”强调时间的延续性,引导时问状语从句。B项since即可引导原因状语从句,意为“因为”;也可引导时间状语从句,意为“自从”。D项unless“除非”强调条件,引导条件状语从句。这三项均无法表达前后分句之间的对比关系。
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0
考研英语二
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