---Our teacher is always kind.
---Yes. When she asked me to answer her question yesterday, I gave a wrong answer at first. She _______me to try again.
A:encouraged
B:taught
C:enjoyed
D:protected
已知:如图,在△ABC中,AB=AC,以AC为直径的⊙O交AB于点M,交BC于点N,连接AN,过点C的切线交AB的延长线于点P.
(1)求证:∠BCP=∠BAN
(2)求证:AMMN=CBBP.
站在地球的什么位置,四面方向都是北方( )
除了铺设透水砖以外,下列哪些做法对改善北京城市生态环境有直接影响( )