【单选题】The reason why he was late is ______ he got up too late.
【简答题】He got up so late that he missed the school bus.(改为同义句) He got up________ late________ ________the school bus.
【单选题】Why was Tom late for class?
【单选题】He got up very late, ______ he was late for school. [ ]
【单选题】在 BaSO 4 的饱和溶液中加入适量 NaNO 3 ,会使 BaSO 4 在水中溶解度
【单选题】在含有BaSO4沉淀的饱和溶液中,加入足够的KNO3,这时BaSO4的溶解度会( )
【单选题】单项选择。 He ______ up early every morning. But he ______ up late this morning. [ ]
【单选题】1-4. 如果BaCO 3 沉淀中尚有0.10 mol BaSO 4 , 在1.0 L 此沉淀的饱和溶液中加入多少 mol Na 2 CO 3 才能使0.010 mol BaSO 4 完全转化为BaCO 3 ? K sp θ (BaCO 3 ) = 2.6 x 10 -9 . K sp θ (BaSO 4 ) = 1.1 x 10 -10
【单选题】The reason ______ he missed the train was ______ got up late.