多选题 Hydrogen is the ______ element of the universe in that it provides the building blocks from which the other elements are produced.
  • A. steadiest
  • B. expendable
  • C. lightest
  • D. final
  • E. fundamental
【正确答案】 E
【答案解析】[解析] In that引导前后因果关系，所以空格应填“building blocks”的同义成允正确答案为E。