题目内容：

On the fourth Sunday of every November , most Americans get together around the dinner table to celebrate Thanksgiving . Special traditions in the US have been around for many years . __1.___ These are four popular Thanksgiving traditions and how they started .

     __2._ The first Thanksgiving meal was in the autumn of 1621 when the first travelers from England celebrated their first harvest（收获）. But it wasn’t made into an official（官方的） holiday until 1863 . The first large meal had turkey , fruits and vegetables , which are still common today .

     __3.__ Historians say the first travelers invited Native Americans to the meal to thank them for teaching them how to grow food . Today at the large meal , friends and family will also say what they are most thankful for .

     _4.___ The parade includes very large balloons that look like cartoon characters and beautiful floats that carry famous people . There are also many musical performances to watch . This parade started in 1924 , and today over 44 million people watch it on TV or in New York City .

     __5.__ People started to watch football on Thanksgiving a few years after the day became an official holiday . Today , the National Football League takes advantage of this popularity and hosts three NFL games every Thanksgiving .

A. Giving thanks is what the holiday is all about . B. American football is something people both watch and play with their family on Turkey Day . C. However , some people don't always stop to think about where the traditions came from . D. Here is one way to make turkey for a Thanksgiving dinner . E. A large meal is the important event every Thanksgiving . F. Every year , there is a Macy's Thanksgiving Day Parade in  New York City . G. It took years before there was a national Thanksgiving Day .