請回答第 47 題至第 50 題
        Although firefighting is the most ___47___ aspect of a firefighter’s role, and continues to be a primary function of thefirefighters’ duties, emergency medical response and care have become a large part of the firefighters’ daily activities.Emergency medical care, fire prevention, fire education, and community relations occupy a major part of the time on thejob. Firefighters are trained to ___48___ buildings for hazardous conditions that may result in a fire. Armed with theirknowledge of fire hazards and local fire and building laws, they check exit routes, the storage and use of flammable andcombustible materials, ___49___ of public places, and improper use of equipment or materials in all kinds of buildings.Firefighters are also trained to administer emergency first aid. There are several levels of training: Emergency MedicalTechnician-Basic (EMT-1), Emergency Medical Technician-Intermediate (EMT-2), and Emergency Medical Technician ___50___ (EMT-P). These are the major classifications of Emergency Medical Services Systems. The training and skillrequirements are standardized and are based on the academic or practical curriculum respectively in Taiwan.
【題組】47
(A) variable
(B) valuable
(C) visible
(D) vulnerable