实验室常用于皮肤或普通实验器械的消毒液有()。
A、0.2%~1%漂白粉溶液
B、70%乙醇
C、2%碘酊
D、0.2%-0.5%的洗必泰
参考答案:B, C, D
-Who took away the book?
-Tom ___________.[ ]
A. Will
B. took
C. did
D. does
葡萄胎的镜下特点为______、______和______。