You are required to strictly follow the correct procedure                  you are quite skilled at skiing.

as if

even though

in case

ever since

考查连词词义辨析。句意：即使你非常擅长滑雪，也需要严格遵循正确的流程。A. as if 好像；B. even though 即使；C. in case 以防，万一；D. ever since 自从。由句意和you are quite skilled at skiing可知，这里应用even though，引导让步状语从句，强调 “即使具备某种条件，仍需采取特定行动”，符合语境。故选B。