A:①②
B:③④
C:①③
D:②④
若实数a、b、c满足a+b+c=0,且a<b<c,则函数y=ax+c的图象可能是( )
唐朝时,日本尤其喜爱的中国诗人是( )
English is widely used _______ travelers and business people all over the world.