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).
1943年:三八”妇女节,延安的妇女领袖蔡畅发表文章,认为妇女的解放要鼓励妇女从事手工业和农业生产劳动。这一看法( )
先帝在时,每与臣论此事,未尝不叹息痛恨于桓、灵也。
判断对错.
3和5都是30的质因数.