Digital photography is still new enough that mast of us have yet to form an opinion about it, much less (1)_____ a point of view

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问题     Digital photography is still new enough that mast of us have yet to form an opinion about it, much less (1)_____ a point of view. But this hasn’t stopped many film and computer fans from agreeing (2)_____ the early (3)_____ wisdom about digital cameras—they’re neat (4)_____ for your PC, but they’re not suitable for everyday picture-taking.
    The fans are wrong: more than anything else, digital cameras are radically (5)_____ what photography means and what it can be. The venerable medium of photography as we know (6)_____ is beginning to seem out of (7)_____ with the way we live. In our computer and camcorder culture, saving pictures (8)_____ digital files and watching them on TV is no less (9)_____—and in many ways more (10)_____—than fumbling with rolls of film that must be sent off to be (11)_____.
    Paper is also terribly (12)_____. Pictures that are incorrectly framed, focused, or lighted are nonetheless (13)_____ to film and ultimately processed into prints.
    The digital medium changes the (14)_____. Still images that are (15)_____ digitally can immediately be shown on a computer monitor, TV screen, or a small liquid-crystal display (LCD) built right into the camera. And since the points of light that (16)_____ an image are saved as a series of digital bits in (17)_____ memory, (18)_____ being permanently etched onto film, they can be erased, retouched, and transmitted on-line.
    What’s it like to (19)_____ with one of these digital cameras? It’s a little like a first date—exciting, confusing and fraught with (20)_____.


选项 A、valuable
B、useful
C、economical
D、practical

答案D

解析 本句在谈数码相机的优点,显然"saving pictures as digital files and watching them on TV"都是数码相机的新功能,也是非常实用的功能,由此分析四个选项,不难看出"practical"正确。valuable有价值的、useful有用的、economical经济的,均不能反映该功能的特点。
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