— Would you like ?
— No, I've just had some bread.
A:something to drink
B:something to eat
C:anything to drink
D:anything to eat
李大爷是糖尿病患者,你给他提供的治疗方案是注射( )
若α∈( π4 ,π)且3cos2α=4sin( π4 ﹣α),则sin2α的值为( )