—Yes, we the strongest team in our school at last.
A:win; defeated
B:defeat; won
C:win; hit
D:defeat; lost
如图,将三角形纸片ABC沿DE折叠,使点A落在BC边上的点F处,且DE∥BC,当DE=2时,BC的长为( )
3.14. 与3. 1.4. 相比( )
有关生物学实验或调查的叙述,正确的是( )