A:Ca(NO3)2
B:HNO3
C:NaNO3
D:Ba(NO3)2
结束“文化大革命”十年内乱的标志是( )
中国改变工业落后的面貌,开始向社会主义工业化迈进的标志性事件是( )
After staying in hospital for two weeks, he r____ from his illness.