单选题 College students in China are ______ to grammatical errors when they use English.
  • A. prone
  • B. conducive
  • C. rigorous
  • D. casual
【正确答案】 A
【答案解析】be prone to:容易遭受,倾向于;be conducive to:有益于;rigorous:严格的;casual:漫不经心的,随意的。