Vans, Keds, Dollies-they sound like the names of rock bands, but if you have agers, you'll know they're actually the latest in age footwear. But experts are now warning that the current shoe fashions will be causing agers discomfort in the short term and storing up years of foot, knee and back pain in the future. Here, the experts identify the problems caused by agers' shoe choice.KEDS/VANS Slipon shoes with elastic (弹性的) sides are particularly popular among age boys-with Keds and Vans the most soughtafter brands. The main problem is that they are just too flat-so flat that the heel, which strikes the ground first, also becomes damaged and painful. BALLET PUMPS The worst shoes of all are such light and thin dolly shoes. The problem is partly their flatness, as with Keds and Vans. However ballet pumps, which have no string or heel, have other specific problems. "As the shoe has no fastening device, it relies on the toes to keep the shoe on, causing an awkward gait (步法) , this leads to short-and longterm problems such as calluses (茧子), heel and knee pain." WEDGES AND STILETTOS These shoes can also cause problems with gait. They may look good, but the heels on these are so high they can force the wearer's body weight forward, them very unstable.s who wear these shoes regularly are also in er of joining those millions of women with constant back pain. SCHOOL SHOES So what do podiatrists (足科医生)have on their wish list, especially for everyday wear? Something in a natural, breathable fabric, with a string to hold it on, with a small heel and a deep toebox that does not press the toes, such as Clark's, Marks & Spencer or Rhino. If your insists on wearing 'bad' shoes, get them some foot orthotics(矫形器) in the shoes. These support and correct the movement of the foot and, properly fitted by a podiatrist, can often transform their walk and halt the damage. 1. Of all the shoes mentioned in the passage, which can cause the worst problems? A. Marks & Spencer.B. Wedges & Stilettos.C. Keds and Vans.D. Ballet Pumps. 2. Which pair of shoes may NOT be found on the podiatrists' wish list? 3. The underlined word" halt" in the last paragraph probably means________. A. increase B. worsen C. stop D. cure 4. From this passage we can infer________. A. trendy shoes may ruin agers' healthB. fashionable shoes all have orthotics in themC. experts are strongly against wearing popular shoesD. podiatrists are expert at producing branded shoes