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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  84
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."
【C20】
选项 A、transfers
B、quakes
C、transits
D、shifts
答案D
解析 上下文语义题。此处填入名词，与climate构成名词性短语。该段首句提及气候变化(climate change)会加剧饥饿与贫穷，接着讲农民对多变的天气所采取的措施，其讲述的核心均是气候变化，再结合空格后的并列名词短语the magnitude of the changes required to adapt“为适应所作的改变”，推断填入的名词应该也是表示“变化”之意，D项shifts“变化”填入文中表示“气候变化的速度”，符合语境。A项transfers“迁移”和C项transits“运输”也能体现“改变”的意思，但transfer通常指地点、局势或工作等方面的变化，transit则侧重指把人或货物从一个地方运送到另一个地方，且二者不宜被climate修饰。B项quakes“震动”代入句中为climate quake，语义不通。
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