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  3. The Intergovernmental Panel on Climate Change (IPCC) was set up in 1988 to a

The Intergovernmental Panel on Climate Change (IPCC) was set up in 1988 to a

游客2025-01-18  55
问题     The Intergovernmental Panel on Climate Change (IPCC) was set up in 1988 to assess information on climate change and its impact. Its Third Assessment Report predicts global temperature rises by 2100 of between 1.4℃ and 5.8℃. Although the issue of the changing climate is very complex and some changes are uncertain, temperature rises are expected to affect countries throughout the world and have a knock-on effect with sea-level rises.
    Scientists have argued about whether temperature rises are due to human activities or due to natural changes in our environment. The IPCC announced in 2001 that "most of the warming observed over the last 50 years is likely to be attributable to human activities". This was a more forceful statement than in 1996 when the Second Assessment Report stated that there was a "discernible human influence on the climate" which was the first time they had concluded such a link. Many experts believe the faster the climate changes, the greater the risk will be.
    Key points of the projections for climate change globally include that by the second half of the 21st century, wintertime rainfall in the northern mid to high latitudes and Antarctica will rise, that meanwhile Australia, Central America and southern Africa are likely to see decreases in autumn precipitation, that some land areas in the tropics will see more rainfall, and that there will generally be more hot days over land areas. [br] Which statement was announced by IPCC in 2001?
选项 A、Global temperature will rise by 2100 between 1.4 ℃ and 5.8 ℃.
B、Temperature rises are expected to affect countries throughout the world.
C、Most of the warming is likely to be attributable to human activities.
D、There was a "discernible human influence on the climate".
答案 C
解析 题目问哪一个说法是IPCC在2001年宣布的。根据题干in 2001 by the IPCC定位至第2段第2句。该句提到，IPCC于2001年发表声明称“过去50年观测到的大部分变暖现象可能是人类活动造成的”，因此C项正确。A项“到2100年全球气温将上升1. 4到5. 8摄氏度”和B项“预计气温上升将影响世界各国”是IPCC第三次评估报告预测的内容，可排除。D项“人类对气候有明显的影响”是IPCC于1996年发表的第二次评估报告预测的内容，也可排除。
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