单选题 As we know, physics ______ the science of energy.
  • A. was
  • B. were
  • C. is
  • D. are


【正确答案】 C
【答案解析】本题考查的是主谓一致。以-ics结尾的学科名称，如：physics，math-ematics，optics等等，通常用单数谓语。