单选题 Most of the 33 newly discovered planets' giant gas bags swing so erratically that they create {{U}}havoc{{/U}} on any smaller, nearby, life-friendly planets.
  • A. destruction
  • B. benefits
  • C. chaos
  • D. violence
【正确答案】 A
【答案解析】havoc“大破坏”。A项destruction“破坏”；B项benefits“利益”；C项chaos“混乱”；D项violence“暴力，暴行”。