I always enjoyed French at school, but the advanced courses in literature turned me .A. of

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(答案→)A. off
B. on
C. back
D. down
解析：考查动词短语：句意：turn off关掉，（使）失去兴趣（或爱好，热情）；（使）不再喜欢（人或事物）；（使）厌烦，turn on打开，turn back转身，turn down声音调小，拒绝，句意：我在学校喜欢法语，但是文学的高级课程使我失去兴趣。选A。