小阳在利用吸管喝饮料时认为“饮料是靠嘴的吸力进入口中的，而不是靠大气压进入口中的”，而小明认为他的说法是错误的，为此他准备了如下一些器材：一个装满水（可以饮用）的玻璃瓶，一个可以塞紧瓶口的塞子，塞子上开有两个孔，其中一个孔中插有一支吸管并与塞子压紧．请你帮助小明设计一个实验证明小阳的说法是错误的．写出实验步骤并加以说明．

    It was Sunday yesterday. The weather was fine. It was sunny and there were no clouds in the sky. Sandy and Sue got up early in the morning. Now they were in the park. It is a big park and it's so beautiful. They saw many people there. Some boys played football on the grass. Some girls danced under the tree. An old man walked beside the lake. A young woman and her little son looked at the fish in the lake. How happy they are!

   We can see walls everywhere in the world. But the Great Wall of China is the biggest of all. The Chinese call it. “The Ten-thousand-Li. Great Wall.” It’s in fact (事实) more than 6,000 kilometers long. It’s 4-5 meters wide. In most places, five houses or ten men can walk side by side. When you visit the Great Wall, you can’t help wondering (疑惑) how the Chinese people were able to build (建造) such a great wall thousands of years ago. Without any modern machine (机器), it was really very difficult to build it. They had to do all the work by hand. It took millions of men hundreds of years to build it.
   The Great Wall has a history of over two thousand years. The kings began to build the first parts of it around two thousand seven hundred years ago. Then, Qin Shihuang had all the walls joined up (连起来). He thought that could keep the enemy (敌人) out of the country.
Today the Great Wall has become a place of interest. Not only Chinese people but also people from all over the world come to visit it.