Answer: A, B, C, D According to the provisions of Article 4 of the "Measures for the Administration of Futures Practitioners", the term "futures practitioners" as mentioned in these Measures refers to: ① managers and professionals of futures companies; ② Managers and professionals engaged in futures settlement business among non-futures company clearing members of futures exchanges; ③ Managers and professionals engaged in futures investment consulting business in futures investment consulting institutions; ④ Institutions that provide intermediary introduction services to futures companies Managers and professionals engaged in futures business; ⑤ Other personnel specified by the China Securities Regulatory Commission.

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