_____ you are in a speech contest or you are giving a talk in class, a little preparation will make your presentation organized and dynamic.
A．EitherB．On condition thatC．No matterD．Whether
D
考查連詞。whether…or…不管…還是…；either…or…或者…或者… no matter后面應(yīng)加疑問(wèn)詞，故排除。on condition that只要，條件是，不符合語(yǔ)境。
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