下列因式分解正确的是( )
A:a(x+y)=ax+ay
B:10t2﹣5t=5t(2t﹣1)
C:y2﹣4y+3=(y﹣2)2﹣1
D:x2﹣16+3x=(x+4)(x﹣4)+3x
--Where is my watch? I ________ find it.
--Don't worry. It must be somewhere in your room.
那________是遥远的年代了。那时候这里________是一片芬芳的草地,也许是________的湖沼,________的大自然,万物鼎盛。