由题意α为锐角,有sinα+cosα=1+2sinαcosα=1+2425=4925=75
故答案为75
. It is ______ for anyone to choose good friends.
A.the most important
B.too important thing
C.a most important
D.most important
It is one thing to enjoy listening to good music, but it is________another to play it well yourself.[ ]
A. quite
B. very
C. rather
D. much