单选题 Stephen Schneider, a climatologist at Stanford, notes that unlike greenhouse gases, which ______ rapidly around the globe, the sulfate droplets tend to concentrate over industrialized regions.
  • A. unify
  • B. fragment
  • C. disperse
  • D. shatter
【正确答案】 C
【答案解析】[解析] 本题空格处是说迅速分散于全球。C项的“disperse分散，疏散”符合题意，如：A group of children dispersed(一群孩子散开了)。其他三项“unify统一”；“fragment碎片”；“shatter碎片”都不正确。