1. What are jiaozi?
Jiaozi are a traditional Chinese food.
2. When do people usually eat jiaozi during the Spring Festival?
On the first day of the Chinese New Year.
3. What does zishi refer to in China?
It refers to the hours between 11 p.m. and 1 a.m.
4. What fillings do people use to make jiaozi?
They use different fillings—meat, vegetables, or both.
5. Why do people sometimes put sugar in a jiaozi on the Chinese New Year's Eve?
To wish for a sweet life.
答案：【解析】：本题主要考查了阅读理解的能力，需要根据短文内容来回答相关问题。题目给出的短文主要介绍了中国传统文化食物——饺子，以及与之相关的春节习俗。接下来，我会根据短文内容，逐一解答每个问题。
1. 饺子是什么？这个问题可以直接从短文中找到答案，短文明确提到"Jiaozi are a traditional Chinese food."，即饺子是一种传统的中国食物。
2. 人们在春节期间通常什么时候吃饺子？根据短文，"On the Chinese New Year's Eve, people make jiaozi. On the first day of the Chinese New Year, family members eat jiaozi together."，说明人们通常在除夕夜包饺子，新年的第一天一起吃饺子。
3. 在中国，子时指的是什么时间？短文中明确提到，"In China, zishi refers to the hours between 11 p.m. and 1 a.m."，即子时指的是晚上11点到凌晨1点的时间。
4. 人们用什么馅料来做饺子？短文中提到，"Most Chinese can make them, and they use different fillings (馅料)—meat, vegetables, or both."，说明人们可以用肉、蔬菜或者两者混合来做饺子馅。
5. 为什么人们在除夕夜有时会在饺子里放糖？根据短文，"Sometimes they put sugar in a jiaozi to wish for a sweet life."，说明人们在饺子里放糖是为了祝愿生活甜美。
【答案】：
1. Jiaozi are a traditional Chinese food.
2. On the first day of the Chinese New Year.
3. It refers to the hours between 11 p.m. and 1 a.m.
4. They use different fillings—meat, vegetables, or both.
5. To wish for a sweet life.
