Read and answer.（阅读短文，回答问题) There are four seasons in a year: spring, summer, fall and winter. Each season has three months. Spring is the first season of the year. In spring, the weather gets warmer and the trees turn green. Summer is the hottest season in a year. People always find cool places. They like to swim and eat ice-creams. During the summer. the plants and flowers are at their best. Fall is a wonderful season. It is the time for harvest (丰收) and the peasants (农民)  are very busy. Winter is the last season of the year. It is cold in winter. In many places it snows. Children are very happy, because they can make a snowman and dance around it. 1. How many seasons are there in a year? ______________________________________________________________________________ 2. Which one is the first season? ______________________________________________________________________________ 3. Why is fall a wonderful season? ______________________________________________________________________________ 4. Who are happy in winter? Why? ______________________________________________________________________________