题目

——Do you know ______ boy over there?—— Yes, he likes playing _____ basketball very much. A . the; 不填 B . a; the C . a; 不填 D . the; a 答案：A设△ABC的三边长分别为a，b，c，已知a=3，c=2，B=120°．（1）求边b的长；（2）求△ABC的面积．