you don’t have much experience in this field, why don’t you ask ProfessorWang for advice?A. Unless

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【题目】_______ you don’t have much experience in this field, why don’t you ask Professor

Wang for advice?

A. Unless B. In case

C. As long as D. Now that

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【答案】D

【解析】句意：既然你在这个领域没有太多的经验，为什么你不能向王教授请教呢？unless除非；in case万一；as lon as只要；now that既然。根据句意故选D。