以下何种方法可以消灭暴露在外界的艾滋病病毒()
A.凉水冲洗
B.用水煮沸20分钟
C.75%酒精10分钟消毒
D.1%漂白粉浸泡30分钟
E.紫外线照射
参考答案:B, C, D
—All the volunteers were very tired, but of them took a rest.
—They were busy looking for the missing people.
A.neither
B.all
C.both
D.none
将学习过程视为“闻一见一知一行”的学者是()。
A.老子
B.苟子
C.孔子
D.奥苏伯尔