完形填空：
　　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 62 the world's leading agricultural organisations.
　　The effects of climate change are likely to be seen across the entire tropical 63 but many areas previously considered to be 64 food secure are likely to become highly 65 to droughts, extreme weather and higher temperatures, say the 66 with the Consultative Group on International Agricultural Research.
　　Intensively farmed areas 67 northeast Brazil and Mexico are likely to see their 68 growing seasons fall below 120 days, which is 69 for crops such as corn to mature. Many other places in Latin America are likely to 70 temperatures that are too hot for bean 71 , a staple in the region.
　　The impact could be 72 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 73 of the growing season.
　　Higher peak temperatures are also expected to take a heavy 74 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 higher than 30C. This is 75 to the maximum temperature that beans can tolerate, 76 corn and rice yields suffer when temperatures 77 this level.
　　"We are starting to see much more clearly 78 the effects of climate change on agriculture could 79 hunger and poverty," said research leader Patti Kristjanson. "Farmers already adapt 80 variable weather by changing their planting schedules. What this study suggests is that the speed of climate 81 and the magnitude of the changes required to adapt could be much greater. "
　　【答案】
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　　【總評(píng)】
　　完形填空原文選自英國的《衛(wèi)報(bào)》（Guardian），原文題目為Climate change in tropics poses food threat to poor。本文主要講述的是全球氣候變化給貧窮地區(qū)帶來的食物緊缺問題，本文采用的是新聞典型的倒金字塔結(jié)構(gòu)，開頭點(diǎn)出整篇文章的核心點(diǎn)，即成長季節(jié)縮短會(huì)導(dǎo)致食物緊缺。第二段講述影響范圍，三、四兩段舉例說明，第五段指出對(duì)食物生產(chǎn)者的影響，而第六段則采用直接引用方式給出評(píng)論。