单项选择题 ABA是植物细胞内的主要胞间化学信号之一。 ( )

单项选择题 理财师帮助客户分析家庭财务状况的内容不包括（）。

单项选择题 听力原文：M: What's the matter, Susan?W: Oh, Brian. I've lost my necklace and I've looked everywhere.M: Don' t worry. Now why don' t you tell me where you have been…What is the man most probably going to do next?A．To buy another necklace immediately.B．To help looking for the necklace.C．To punish her.