C．is a custom unique to rural areas

　　D．has its roots in birthday celebrations

　　【解析】　细节理解题。由第一段第二句Sharing bread or other foods is a common human tradition that can promote unity and trust.可知，共享食物可增强人们彼此间的团结与信任。故B项正确。A项在文章中没有提到；C项(是农村地区特有的习俗)与第一段末句The foods...are often unique to a particular culture or may even differ between rural and urban areas...表述不一致，故排除；D项(起源于生日庆祝)与第二段中的．..so this tradition has its roots in the custom of sharing bread.相矛盾，可排除。

　　【答案】　B

　　2．What does the coin in vasilopita signify for its receiver in the New Year?

　　A．Trust.　　 B．Success.

　　C．Health. D．Togetherness.

　　【解析】　细节理解题。由第三段的A coin is put into the cake，which signifies success in the New Year for the person who receives it.可知，硬币代表着成功。故选B。其他选项都不是vasilopita所代表的。

　　【答案】　B

　　3．The author explains the role of food in celebrations by ．

　　A．using examples

　　B．making comparisons

　　C．analyzing causes

　　D．describing processes

　　【解析】　推理判断题。在解释食物在庆祝活动中的作用时，作者通过举例介绍了在美国和希腊某些食品代表的意义，故A项正确。作者没有进行对比、分析原因或者描述过程，因此可以排除其他选项。

　　【答案】　A

4．What is the passage mainly about?