小型洗衣机小鸭牌:一段VOA NEWS ，适合哪种水平的听力学习者，初中，高中几年级，还是大学？

Americans also eat lots of hamburgers. This ground meat comes from beef. It can be cooked in many ways. Like hot dogs, hamburgers are a favorite picnic food.

Many public eating places in the United States say hamburgers are their most popular foods. People often eat them in places that serve quickly prepared, moderately priced food.

Like hot dog experts, hamburger historians disagree about how their subject got started. The Egyptians and Romans apparently ate ancient versions of hamburgers. In more modern days, people in Hamburg, Germany, made something like a hamburger from pork and beef.

The small town of Seymour, Wisconsin, is among several American towns that claim to have created the first modern hamburger in the United States.

In Seymour, a man named Charlie Nagreen tried to sell meatballs at a local fair in eighteen eighty-five. But as people walked around, it was hard for them to handle the round pieces of meat. So Nagreen flattened the ball of meat. Then he placed this meat patty between two pieces of bread.

In two thousand one, people in Seymour cooked a hamburger that weighed more than three thousand kilograms. This creation reportedly fed thirteen thousand people.
是听力材料，
不是阅读或者别的。
这样的话，
这段内容适合哪个层次的学生呢