Even though she's just 5 years old, Cindy Smart speaks five languages. She's a good reader

. She can tell time and do simple math. She's not a person with exceptional powers. She's just good at programming. Cindy looked like an doll(洋娃娃), with long, golden hair, baby-blue eyes, and a button nose. But Cindy is the first doll that can sec, think, and do as she's told.

The eagle-eyed Cindy follows in the path of other breakthrough toys like Sony's barking Robot Aibo, which was the first to popularize voice command in the late 1990s. Cindy goes one step further; she not only follows instructions but also recognizes shapes, colors, and words -- and remembers. The effect is a doll that appears to be learning.

The toy company which produced Cindy Smart spent ten years trying to see how much human nature it could breathe into an inanimate object. Its engineers began researching basic and 'affordable artificial intelligence (人工智能), creating minibots that sense light, sounds, and pressure, However, without the sense of sight, their toys seemed to be lacking one of the keenest (敏锐的) abilities that life forms use to react to their environment.

So how do the engineers make a doll actually see？ In Cindy's case, it's a multi-step process. When presented a text like "I love you" and asked" Can you' read this？" Cindy takes it as one of 70 preprogrammed commands. Then the inbuilt camera scans(扫描) a 15-degree radius (半径) in search of number or letter-shaped objects. Buried in her stomach, Cindy's 16-bit microprocessor compares the text with her database of 700 words. If it's a match, "I love you, "she utters.

This text most likely appears in a ______.

A．medical report

B．language dictionary

C．science journal

D．music magazine