This could be the perfect gift for the partner, who embarrasses you on the dance floor. Smart socks, which can teach to dance, may be the answer for _  The socks have been developed as a running tool to help runners improve their skills. Thanks to the socks, users can accurately  record not only know far and fast they run but also how well. It means the user maximizes theirperformance, and reduces damage to body and prevents hurt. The hi-tech socks are made of special fibers  that watch the movements of your feet. They look, feel and can be washed like normal clothes. Sensorsrecordeach movement and send it by an ankle transmitter   to a smart phone. Then a "virtual coach" application shows the information and can tell the user what they are doing wrong, and help to improve skill in any task with feet. The socks should be useful to athletes and weekend joggers. "People think running is so easy and of course everybody can do it but not necessarily safely and well," Dr Davide Vigano said. A recent study showed that between 60 and 80percent of runners got hurt per year. This is pretty much more than any other human activity. Researchers say the technology can also be developed to teach people how to dance, play sports such golf, or even to help to teach women to walk better in high heels. Mr. Vigano said, "People could all benefit from the idea. We have had interest from all sorts of sports, like skiing, football, cycling and golf. Anything where you have to use your feet can use it. It could even be put in high heels to help women walk in them safely." Socks are just the start, and the technology could be used in gloves, hats and boots. The socks, anklet and software package, are expected to be sold for around PS120, which will go onsalein March. What's special about fibers that the socks are made of ?
They can monitor the movement of feet. They feel much softer than normal clothes. They are expensive to produce. They act as a smart phone for users.
Question: This could be the perfect gift for the partner, who embarrasses you on the dance floor. Smart socks, which can teach to dance, may be the answer for _  The socks have been developed as a running tool to help runners improve their skills. Thanks to the socks, users can accurately  record not only know far and fast they run but also how well. It means the user maximizes theirperformance, and reduces damage to body and prevents hurt. The hi-tech socks are made of special fibers  that watch the movements of your feet. They look, feel and can be washed like normal clothes. Sensorsrecordeach movement and send it by an ankle transmitter   to a smart phone. Then a "virtual coach" application shows the information and can tell the user what they are doing wrong, and help to improve skill in any task with feet. The socks should be useful to athletes and weekend joggers. "People think running is so easy and of course everybody can do it but not necessarily safely and well," Dr Davide Vigano said. A recent study showed that between 60 and 80percent of runners got hurt per year. This is pretty much more than any other human activity. Researchers say the technology can also be developed to teach people how to dance, play sports such golf, or even to help to teach women to walk better in high heels. Mr. Vigano said, "People could all benefit from the idea. We have had interest from all sorts of sports, like skiing, football, cycling and golf. Anything where you have to use your feet can use it. It could even be put in high heels to help women walk in them safely." Socks are just the start, and the technology could be used in gloves, hats and boots. The socks, anklet and software package, are expected to be sold for around PS120, which will go onsalein March. What's special about fibers that the socks are made of ?
A. They can monitor the movement of feet.
B. They feel much softer than normal clothes.
C. They are expensive to produce.
D. They act as a smart phone for users.
Answer: