单选题 Water is one of the most abundant but also one of the most wanted substances on Earth.
  • A. ample
  • B. multiple
  • C. adequate
  • D. plentiful


【正确答案】 D
【答案解析】abundant这里意为“丰富的”,这与plentiful意思一致,故D为正确答案。ample和adequate都强调的是“充足”,并不是“丰富”。multiple意为“多种多样的”。