《处方管理办法(试行)》规定，医师处方和药学专业技术人员调剂处方应当遵循的原则是()

A．安全、有效、稳定

B．安全、有效、经济

C．安全、有效、科学

D．科学、合理、经济

E．科学、有效、经济

The water is becoming _______ because people don't save it. [ ]

A. more and more

B. less and less

C. fewer and fewer

D. better and better