碘量法测定面粉中过氧化苯酰时是在()溶液中进行的。
A、水
B、三氯甲烷
C、乙醇
D、丙酮
参考答案:D
用besides, except与except for完成句子
1. I like this room____the wall paper.
2. His report is correct____ that some details are omitted.
3. I have two other books____this one.
文件的权限分为三组:()、()和()