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  3. 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

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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."
【C16】
选项 A、assume
B、proceed
C、expect
D、exceed
答案D
解析 上下文语义题。此处填入谓语动词，与从句主语temperatures和宾语this level构成主谓宾搭配。其中this level就是指30℃。根据corn and rice yields suffer“玉米和大米的产量受到影响”和 “接近大豆所能承受的最高温度”，断定气温必定“超过”30℃才能使产量受到影响，故选D项exceed“超过”，表示“气温超过这个水平”。A项assume作“呈现出”讲时，通常指表现出某种状况，不宜与level“水平”构成动宾搭配。B项proceed作“前进”讲时，强调向某一方向移动，温度达到30℃这个水平不足以让产量受到影响，因为上文已提到30℃是所能承受的最高温度，故排除proceed。C项expect“预料，期待”用于主动语态时，其主语通常是人；若主语是物时，常用作be expected…，故expect与句中语境不符。
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