[originaltext] A government report says climate change is already affecting

游客2023-07-19  24

问题  
A government report says climate change is already affecting American agriculture. The new report is from the Climate Change Science Program, which brings together the research efforts of 13 federal agencies. President George Bush launched the program six years ago. Here are some of the findings by scientists: The growing season has increased by 10 to 14 days in northern parts of the United States over the last 19 years. Much of the East and South now get more rain than a century ago. But the report says there is some evidence of increased drought conditions in the West and Southwest. (31) Western states have less snow and ice on the mountains and earlier melting in the spring. Fewer animals will die during warmer winters, but greater numbers will die during hotter summers. And temperature extremes reduce animal production of meat or milk products. The Department of Agriculture was the lead agency for the new report. 38 scientists from universities, national laboratories, nongovernmental organizations and federal service wrote it. They considered more than 1 000 scientific publications. (32) The report was the strongest statement yet by the Bush administration that human activities are the main cause of climate change in the last 50 years. Carbon dioxide from the burning of oil, natural gas and coal is the main gas blamed for trapping heat in the atmosphere. The report says warming is very likely to continue in the United States during the next 25 to 50 years. And it says this is so even if future greenhouse gas emissions are reduced.
30. What’s the main idea of this passage?
31. What can we learn from the scientists’ findings?
32. What did the Bush administration declare strongly in the new report?

选项 A、American economy is influenced by climate change.
B、American industry is influenced by climate change.
C、American agriculture is influenced by climate change.
D、American environment is influenced by climate change.

答案 C

解析 主旨大意题。短文开篇便提到,一份政府报告称,气候变化正在影响美国农业,接下来的内容均围绕气候对农业的影响展开。因此,本文谈论的主题就是气候变化对美国农业的影响。
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