“捧着一颗心来,不带半根草去。”这句话赞美了老师 ( )
A:渊博的学识和严谨的教学态度
B:精湛的教学艺术
C:热爱学生,乐于奉献的崇高品德
D:诲人不倦的教育态度
Tom and his sister ______ to the barbecue last Saturday.They were very happy.
Lucy saw an old man ____ (lie) on the ground when she went home yesterday.
求证:∠C=∠E.