[解析]
(1)C.细节理解题.根据文章第一段的句子Jennifer wanted to be the " leader" of our little group.She was controlling,and I couldn't make new friends.可知,作者认为Jennifer太以我们为中心了.故选C.
(2)B.词义猜测题.根据文章第一段的句子I was sick of having to battle for friendship.I stopped sitting with Jennifer at lunch and waiting for her after class.可知,"something snapped" 意为作者和Jennifer分手了.故选B.
(3)C.细节理解题.根据文章的句子I guess I had changed﹣﹣I became moody,depressed,and lonely.可知,作者决定和Jennifer分手因为Jennifer伤害了她的感情.故选C.
(4)D.推理判断题.根据文章的句子Now,I have tons of friends.They support me when I am sad,and I support them.We have fun together and I love them all.可知,作者喜欢不仅仅一个友谊.故选D.