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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

admin2022-10-25  85
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."
【C4】
选项 A、devoted
B、indifferent
C、vulnerable
D、immune
答案C
解析 上下文语义题。该段落只有一句话，主要是讲气候变化给热带地区所带来的影响，but. 后面的部分，previously considered to be “原先认为是”和are likely to become“如今可能会”可知，此处将过往的情况跟如今和今后的情况进行对比，今后的情况应该与前面提的secure相反，根据介词to后面的宾语“干旱、极端天气和气温升高的影响”，推断此处是讲很多地区容易遭受干旱等不利影响，C项vulnerable与to连用表示“易受……攻击”，符合句意。其他三项也能与to连用。A项devoted to意为“专心/专用于……”，填入句中为“安全的粮区可能变得专心/专用于干旱、极端天气和更高的气温”，语义不通。B项indifferent to意为“对……冷漠，漠不关心”，代入句中为“安全的粮区可能对于旱、极端天气和更高的气温漠不关心”，不符合常理。D项immune to意为“对……有免疫力”，可引申为“不受……影响”，代入句中跟文章要传达的“受到干旱、极端天气等的影响”意思相反。
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