单选题 I am not sure whether we can give the right advice ______ emergency.
A.on account of B.in case of C.at the risk of D.in spite of

【正确答案】 B
【答案解析】[解析] 本题考查的是介词短语。on account of由于;in case of以防万一;at the risk of冒风险;in spite of尽管。我不确定我们在危急状况下能否给出正确的建议。