Who are not contributing to the safe operation of flights worldwide?
举一反三
- These findings ________ worldwide research on factors contributing to viruses in marine waters. A: prompted B: estored C: offered D: formed
- 中国大学MOOC: He is a scientist who has won worldwide _________.
- The police work for the ______ (safe) of all the people who live in this city.
- The younger generation who born with the explosion of technology is facing a safe time.
- Poldek Pfefferberg is considered to be one of the persons who help contributing to the making of the film Schindler’s List mainly because______________.