题干
— Peter doesn't mind lending you his camera.
— He ________. I've already borrowed one.
A：needn't
B：can't
C：mustn't
D：shouldn't
答案(点此获取答案解析）
A
— Peter doesn't mind lending you his camera.
— He ________. I've already borrowed one.
A：needn't
B：can't
C：mustn't
D：shouldn't
晶体滴加浓盐酸,产生黄绿色气体；②向FeCl2溶液中通入少量实验①产生的气体，溶液变黄色
；③取实验②生成的溶液滴在淀粉KI试纸上,试纸变蓝色.下列判断正确的是
