题干
The mother said, “ Be friendly to others.” The mother ____ friendly to others.
A：asked her son be
B：told her son to be
C：ordered her son be
D：told her son be
答案(点此获取答案解析）
B
，BD是角平分线，DE⊥BC于点E,若AD=3，BC=4，求△BDC的面积．
