A:∠α=∠β
B:∠α<∠β
C:∠α=∠γ
D:∠β>∠γ
加偏旁,变新字。
里--____ ____ 争----____ ____
①f(x)的图象过点 (0,32) ;
②f(x)在 π12,2π3 上单调递减;
③f(x)的一个对称中心是 (5π12,0) ;
④将f(x)的图象向右平移|φ|个单位长度得到函数y=2sinωx的图象.
boring, interesting, get, difficult, great
- Lucy, what were you doing at nine last night?
- I ___________ the piano. I usually practice the piano at that time.