Look at the four squares,A,B ,C , and D, which indicate where the following sentence could

be added to the passage. Where would the sentence best fit？

In another example, an actor appears to take off his head and place it on a table,

One category of special effects is called optical or visual effects, tricks made with the camera. One of the pioneers of optical effects was the French filmmaker Georges Méliès, who invented a technique called stop-motion photography. With this technique, a scene is filmed, the camera is stopped, the scene is changed in some way, and then the camera rolls again.AStop-motion photography can create the illusion of an actor disappearing on screen. In one short film, an actor's clothes keep returning to his body as he tries to get undressed.B Méliès also invented a technique known as split screen.C By putting a card over the camera lens, he prevented half of the frame. of film from being exposed. He filmed a scene on the uncovered half of the frame. and then backed up the same strip of film in his camera. For the second shot, he covered the exposed half and took another series of pictures on the half that had been covered the first time. With the technique of split screen, it is possible to achieve illusions such as having the same actor play twins.D

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