— Playing video games is a waste of time.
— I can't agree more. There are meaningful things to do.
A:the most
B:the least
C:more
D:less
⑴AD=DF;(2) S△ABES△ACE = ABAC ;(3) FHAD = 2 ﹣1;(4)四边形BEHF为菱形.
Let's ____ to the playground .
在等差数列{an}中,S10=120,那么a1+a10的值是( )