In the clinical use of antibacterial drugs, the type of drug is selected according to the patient's personal conditions. The first dose and concentration of the drug and the subsequent frequency of drug use and drug compatibility are strictly followed, although the drug-resistant strains cannot be completely prevented. The emergence of the disease should also be able to control the spread and deterioration of drug resistance. The author's opinion on whether drug resistance will occur after using antibacterial drugs is:. ['Inevitable.', 'Not available.', 'Can be controlled.', 'Unsure.']