He that he knew nothing about computer, so he began to work hard at it.
A:knows
B:knew
C:realize
D:realized
下列燃料中,不属于生物质能的是( )
秦刚拟办一份历史手抄报,准备了如图所示素材,据此推断这份手抄报的主题是( )
在下列动物中,属于类人猿的是( )