The research will go on a new and better material is found to replace this one.
举一反三
- When Jason's computer broke down, his parents decided___ A: not to have it repaired. B: to buy him a new one. C: not to replace it with a new one.
- He planed to replace the old engine（ ）a new one. A: by B: of C: instead D: for
- I planned to buy a new dictionary to ______ the tom one. A: hurt B: earn C: fetch D: replace
- Please select a word to replace the underlined one. What they found out is so important that the university decided to make changes to its polices.
- - Which coat do you like better, the red one ______ the blue one? - The blue one. A: but B: and C: or D: /