听力原文：

Thanksgiving is a very important traditional holiday in America. On the fourth Thursday of each November, families and friends get together to celebrate with a traditional turkey dinner, usually in the mid-afternoon. Thanksgiving came from a celebration of the year’s harvest and is similar to the Mid-Autumn Festival in China. This American tradition started in 1621. The main dish of this meal is turkey with vegetables like carrots and potatoes.

参考答案：2. C 3. A