A:What is it?
B:When's Mother's Day?
C:When's your birthday?
二次函数y=2x2﹣4x﹣1的顶点式是( )
良将劲弩守要害之处,____ 。
给加线字选择正确的读音。
分类____(lì lèi) 音乐____(lè yuè)
旅店____(lǐ lǚ) 颈部____(jìn jìng)
脚趾____(zǐ zhǐ) 转弯____(zhuǎn zhuàn)