______ tests are designed to measure people's ability in a language, regardless of any training they may have in that language.
(A) Progress
(B) Achievement
(C) Diagnostic
(D) Proficiency
【用戶】Tom Chiu
【年級】大四下
【評論內容】proficiency KK [prəˋfɪʃənsɪ] DJ [prəˋfiʃənsi] 精通; 熟練