水厥为什么“宜先治水”？它在临床上有什么指导意义？
参考答案：
伤寒厥而心下悸，为水停心下胃脘所致。厥与悸皆因水饮为患，故而当先治水，水饮得去，阳气得通，厥逆可愈。若饮去厥不回，再议治厥。若不先治水，却治其厥，不仅厥与悸不得愈，水饮还可渗入肠中，续发下利，故而当先治水。其充分体现了治病求本的治疗原则，在临床上有重要的指导意义，即治病当辨清标本，治法当治本而达标。
Photography is about taking photographs. In 1826, a Frenchman named Niepce needed pictures for his business. But he was not a good artist. So he invented a very simple camera. He put it in a window of his house and took a picture of his garden. That was the first photograph. The next important date in the history of photograph was 1837. That year, Daguerre, another Frenchman, took a picture of his studio. He used a new kind of camera and a different process. In his pictures, you could see everything very clearly, even the smallest details. This kind of photograph was called a daguerreotype. Soon, other people began to use Daguerre’s process. Travelers brought back daguerreotypes from all around the world. People photographed famous buildings, cities and mountains. In about 1840, the process was improved. The photographers could take pictures of people and moving things. The process was not simple. The photographers had to carry lots of films and processing equipment(设备). But this did not stop the photographers, especially in the United States. Mathew Brady was a well-known American photographer. He took many pictures of famous people. The pictures were unusual because they were very life-like and full of personality. Brady was also the first person to take pictures of war. His 1862 Civil War pictures showed dead soldiers and destroyed cities. They made the war seem more real and more terrible. In the 1880s, new inventions began to change photograph. Photographers could buy films readymade in rolls(卷). So they did not have to make the film themselves. Also, they did not have to process(冲洗) the film at once. They could bring it back to their studios and develop it later. They did not have to carry lots of equipment. And finally, the invention of the small hand-held camera made photography less expensive. Photography is also a form of art. Some photographs were not just copies of the real world. They showed ideas and feelings, like other art forms. Title: The 1 of Photography
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