道德感是与一定的______密切关联,并由它激起的______。
参考答案:道德观念 情绪体验
. In our class, when the bell rang and the teacher closed his book, it was a ______for everyone to stand up.
A.mark
B.chance
C.signal
D.measure
下列实验基本操作不正确的是------------------------------------------------( )
A.过滤
B.倾倒液体
C.滴加液体药品
D.取用粉末状固体