【单选题】That fellow hung around for hours and, ______ was worse, kept me from doing my work.
【单选题】设N A 代表阿伏加德罗常数的值,下列关于0.2mol/LBa(NO 3 ) 2 溶液的说法错误的是( )
A.
1L溶液中所含Ba 2+ 、NO 3 - 离子总数是0.6N A
B.
500mL溶液中的Ba 2+ 离子浓度是0.2mol/L
C.
500mL溶液中的NO 3 - 离子浓度是0.2mol/L
D.
500mL溶液中含有0.2N A 个NO 3 - 离子
【单选题】It kept me from going hungry.
【单选题】The heavy snow ___ me __ to school.
【多选题】关于色阶,说法正确的是
D.
调整色阶要根据直方图和整体图像的效果综合来调整
【单选题】邻居家的吵闹声使我无法入睡。
A.
The noise from our neighbors kept me asleep.
B.
The noise from our neighbors kept me awake.
C.
The sound from our neighbors kept me asleep.
D.
The sound from our neighbors kept me awake.