题目

薯片等易碎食品宜采用充气袋包装，下列气体中最不适宜充入的是    A．O2    B．N2    C．CO2    D．空气 答案：A　　In 1826, a Frenchman named Niepce needed pictures for his business. But he was not good at drawing. So he invented a very simple（简单的）camera. He put it in a window of his house and took a picture of his garden. That was the first photo. 　　In 1837, Daguerre, another Frenchman, took a picture of his office. He used a new kind of camera and a different way. In his pictures, you could see everything very clearly. 　　Soon, other people began to use Daguerre's way. They took photos of famous buildings, cities and mountains. 　　In about 1840, the way became better. They could take pictures of people and moving things. Butthe way was not simple. They had to carry lots of film and equipment（设备）. 　　Matthew Brady was one well-known American photographer（摄影师）. He took many photos of people. The photos were unusual because they were very life-like. 　　Brady was also the first person to take pictures of a war（战争）. His 1862 Civil War pictures showed dead soldiers and broken cities. They made the war seem more real and more terrible. 　　In the 1880s, new inventions began to change photography. Photographers could buy film ready-made in rolls（卷曲）. So they did not have to make the film themselves. They could bring it back to their offices and develop it later. They did not have to carry lots of equipment. And the invention of the small hand-held camera made photography less expensive. 　　With the small camera, anyone could be a photographer. They took pictures of their families, friends and favourite places. They called these pictures“fast-shots”. Photos became very popular in newspapers in the 1890s. Soon magazines and books also used photos. They were much more real than drawing. 　　Photography also turned into a form（形式）of art by the end of the 19th century. Some photos were not just copies of the real world. They showed ideas and feelings, like other art forms. (1）The first photo was taken with ________. [　　] A．a small hand-held camera B．a modern machine C．new rolling film D．a very simple camera (2）The story of photography ________. [　　] A．began in the 18th century B．began in France C．is unknown D．began in the United States (3）Matthew Brady was well-known for ________. [　　] A．inventing the first camera B．taking pictures of French cities C．photos of people and the war D．having been at war (4）The new inventions in photography made it possible for ________. [　　] A．anyone to be a photographer B．only rich people to take pictures C．Brady to take pictures of the Civil War D．us to carry lots of equipment (5）Photography can also be a form of art because photographers can ________. [　　] A．take pictures to show the real world B．show ideas and feelings in pictures C．copy the pictures of old books D．take pictures of moving things