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(2018·山東臨沂) Could you please speak a little louder? I ______ hear you very well.

A. can’t B. mustn’t

C. shouldn’t D. needn’t

A 【解析】 句意：請你說大點聲好嗎？我不能很好地聽到你說的話。考查情態(tài)動詞辨析。can't不能，表示不能夠；mustn't不許，表禁止；shouldn’t不應該，表勸誡；needn’t無需，表示沒必要。本句表示“不能夠”，根據句意語境，可知BCD三項意思都與句意不合，故選A。
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