单选题 Fluoride deters tooth decay by reducing the growth of bacteria that destroy tooth enamel.
  • A. facilitates
  • B. overwhelms
  • C. inhibits
  • D. loosens


【正确答案】 C
【答案解析】deter：阻止、威慑，与inhibit(抑制、阻止)意思相近；facilitate：使便利、促进；overwhelm：使不知所措、压倒；loosen：解开、放松。