题目

 We discussed where to go for a whole morning, but we decided to stay at home_____. A. at the end    B. by the end     C. in the end        D. on end 答案：C从化学试剂商店购买的某些试剂瓶上常贴有危险化学品的标志。盛装浓硫酸的试剂瓶上所贴的危险化学品标志是    A             B            C                 D