【题目】Long-term ______ to domestic and foreign classics has made him so knowledgeable.
A. resistance B. submission C. admission D. exposure
在线课程【答案】D
【解析】考查名词。A. resistance阻力；B. submission投降，服从；C. admission承认，进入许可；D. exposure暴露。句意：长期接触国内外名著让他如此的知识渊博。exposure to“暴露，受到……”，故答案为D。