—You're coughing a lot. You'd better smoking now.
—That's really hard for me.
A:give up
B:go on
C:set up
如图所示,∠E=∠F=90°,∠B=∠C,AE=AF.有以下结论:①EM=FN;②CD=DN;③∠FAN=∠EAM;④△ACN≌△ABM.其中正确的有( ).
“看万山红遍,层林尽染,漫江碧透,百舸争流,鹰击长空,鱼翔浅底,万类霜天竞自由”描述了( )
下列有关细胞的物质组成的叙述,正确的是( )