The shorter growing seasons expected with climate change over the next 40 years will endanger hundreds of millions of already po

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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."
【C7】

选项 A、as to
B、for instance
C、in particular
D、such as

答案D

解析 语义逻辑题。该which引导的定语从句是想说明“农作物的黄金生长期缩短到120天以内”对农作物的成熟至关重要,空格位于crops“农作物”与COLT[“玉米”之间,二者属于从属关系(玉米属于农作物),由此推断corn是举例说明哪种农作物,故选用D项such as“例如”。A项as to“关于”一般用来引出对象。B项for instance也可表举例,但它通常表达句与句之间的衔接,用来引出论据论证某一观点;或者用作插入语,在使用中需在后面接逗号,后面不能直接跟宾语,此空格处于句中。没有逗号,故可排除。C项in particular “尤其是”表强调,无法体现crops与corn之间的从属关系。
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