单选题 Talks on climate change resumed in the German city of Bonn on July 16 to {{U}}combat{{/U}} global warming.
  • A. focus on
  • B. settles down
  • C. fight against
  • D. sum up
【正确答案】 C
【答案解析】[解析] combat“应对”。focus on“集中于……”；settles down“专心于……”；fight against“抵抗，对抗”；sum up“总结、概括”。