What’s the coolest kind of transportation （交通工具） for middle school student back from the winter holidays? A racing bike? A car? No, it’s a special 【小题1】 of shoe called Heelys （暴走鞋）. Heelys look just like common【小题2】 shoes, but they have a wheel hidden in the heel. So instead of 【小题3】 , kids can “fly” around in them.

“Wearing Heelys is fun and 【小题4】 ,”said Wu Peng, a boy who wore them on his 【小题5】 day in No. 6 Middle School in Bei-jing. Wu Peng loves the shoes so much that he wears them wherever he goes. Sometimes he even 【小题6】 his parents’ car to the supermarket on his Heelys!

Other students think they are very cool,【小题7】 some haven’t been so lucky with their Heelys. It’s reported that some 【小题8】 have fallen down while using these shoes, and some have been hurt.

“Heelys wheels are on the heels of the shoes, so it’s 【小题9】 to fall.” Said Liu Rui, a doctor at the Hong Kong International Medical Clinic, Beijing. Even 【小题10】 , Liu said, “Wearing Heelys for a long time could stop young people from developing their ankles（脚踝） and legs.”