Please______your voice if you have any questions to ask the chairman.

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问题 Please______your voice if you have any questions to ask the chairman.

选项 A、rise
B、raise
C、lift
D、enlarge

答案B

解析 A项rise意为“上升”，是不及物动词；B项：raise“提高；提升”，是及物动词；C项lift“举起”：D项enlarge“扩大”。

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