A:4L0.5mol/LNaCl溶液
B:2L0.15mol/LNa3PO4
C:5L0.4mol/LNaOH
D:1L0.3mol/LNa2SO4溶液
下列有关课文说法有误的一项是( )。
用适当的介词填空
(1)He was born____ a cold morning.
(2)The girl began to learn to play the piano____ an early age.
(3)The beautiful music was____ Gu Jianfen.
(4)We often watch concerts____ TV.
(5)The boy can play all types____ instruments(乐器).
下列各句中,没有语病的一项是( )
为了写一篇论文,小明同学阅读了《契丹的兴起》《陈桥兵变》《辽.西夏.宋的战与和》等书籍,对此你认为他论文的题目应是( )