【正确答案】 Loved by people of all nationalities in China, the mooncake is a traditional festival specialty. On Mid-autumn Festival, people eat mooncakes while they are enjoying the moon. A round mooncake is shared by the whole family, symbolizing the reunion of the family members. The custom of eating mooncakes can date back to the Tang Dynasty when the mooncakes were eaten as a royal sacrifice on the Mid-autumn Day. It became a diet custom for the whole nation in the Ming and Qing Dynasties. Now, mooncakes are of numerous kinds, with different flavors in various regions. Among them, mooncakes of Cantonese-style and Beijing-style are widely popular.

【答案解析】1．第1句中的定语“我国各族人民喜爱的”较长，可将其处理为后置定语，以插入语形式置于主语mooncake之后，整句表达为Mooncake，loved by people of all nationalities in China，is a…，但因插入语过长，整个句型显繁冗，不妨将此后置定语转换为状语，置于句首，以平衡句型。
2．第2句中的“一边……一边……”可用while来连接两个动作。强调哪个动作，就把包含此动作的分句作为主句，此处把“一边吃月饼”作为主句，表达为people eat mooncakes。“一边赏月”表持续动作，用现在进行时译出，表达为while they are enjoying the moon，注意增译后半句的主语，用they来指代，避免重复。
3．第3句中的“代表着家人团圆”可用分词短语symbolizing the reunion of the family members来表达，作伴随状语。
4．第4句及第5句的前半句都是讲述唐朝吃月饼的习俗，故可将这两部分合译为一句，第5句后半句则另译成一句。注意第5句后半句“至明清时期成为全民共同的饮食习俗”的逻辑主语是“吃月饼的习俗”，与前一句一致，该句可用It替代，以避免重复。
5．最后一句中的“风味也因地各异”可处理为“品种繁多”的补充说明，用介词短语with different flavors invarious regions表达。