【单选题】My brother was still studying into the night while I was asleep. [ ]
【简答题】While l was studying in Madrid, I visited a lot of museums. ( ) in Madrid, I visited a lot of museums.
【判断题】邓小平理论回答了中国社会主义的全部问题。( )
【单选题】邓小平理论回答了( )这个首要的基本的理论问题。
【单选题】My sister was still studying ______ into the night while I was ______ asleep.
【单选题】某一化学反应器中的A原料每小时进料500公斤,进冷却器的A原料每小时50公斤,该反应选择性为90%。反应的转化率、收率为()。