—— __________ do you chat by QQ with your friend in Shanghai every week?——Two hours. I have much homework to do every day.
A:How often
B:How long
C:How far
D:How soon
下列人物中,被称为“诗仙”的是( )
如图所示,电源、滑动变阻器与螺线管相连,闭合开关,在通电螺线管的右端放置一个小磁针,小磁针静止时N极水平向右.则( )
《工人日报》曾刊发以“人有多大胆,钢有多大产”为标题的新闻是在( )