阅读理解。 You need 3D glasses to see some films. I think it is easy to make your own 3D glasses instead of buying them. There are two ways to make 3D glasses. You can decide which way would be easier for you. The first way seems like the cheaper way but the things needed to make the glasses this way may not be things laying around the house. First print out a template(模板) for the glasses at http://paperproject. org/ PDF files/3 dglasses. pdf. After you cut out the template, cut your cellophane (玻璃纸) to fit the holes in the glasses. Make sure you place the red cellophane on the left eye and the blue on the right. You can either stick or tape the cellophane in place. You are now ready to use your glasses. To leam more about why your eyes see different colors, read this article: http:// nzphoto. tripod. com/sterea/anaglyphs. htm#redcyan. To learn some more cool things about your eyes, check out the games at this link: http_://faculty. washington. edu/chudler/chvision. html . Another way you can make 3D glasses is to find an old pair of sunglasses. Take out the lenses(镜片). Get a piece of clear plastic and place the lenses on it, draw a line around the lens and then cut the new plastic lens out. Place the lens back into the sunglasses frame (框). Color the left lens red with a marker and the right eye blue. You now are ready to watch 3D films. 1. When do we need to use 3D glasses? A. When the sun is bright. B. When we cook dinner. C. When we make things. D. When we see some films. 2. If we want to know why our eyes see different colors, we can find the information at____. A. http://paperproject. org/PDF files/3dglasses. pdf B. http://nzphoto. tripod. com/sterea/anaglyphs. htm#redcyan C. http://faculty. washington. edu/chudler/chvision. html D. http://www. xcjyyxw. cn/tresearch/XCindex/index. js 3.What does the writer think of making our own 3D glasses? A. Easy. B. Hard. C. Interesting. D. Boring.