He has ______ over a seminar for social psychologists.

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问题 He has ______ over a seminar for social psychologists.

选项 A、subscribed
B、tangled
C、refrained
D、presided

答案D

解析 preside over sth.主持;subscribe(+to)认捐、捐款;tangle n. & v.纠结、缠结;refrain(+from)忍住、抑制、节制、戒除。
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