单选题
It started with an itch after a stroll on a Caribbean beach, but in just a few days it had developed into a complete travel 27 . In mid-January Eddie Zytner and Katie Stephens, a couple from Windsor, Ontario, went on a vacation to Punta Cana, a resort town on the eastern coast of the Dominican Republic. At some point, they 28 they had been bitten by bugs during one of their walks because their feet wouldn't stop 29 . 'We were scratching our toes for almost the duration of the trip,' Zytner told CNN. It kept getting worse. Four days after they got back to Windsor, their feet swelled, then 30 into painful blisters, according to the couple's Facebook posts. They could no longer wear socks or shoes and had to use 31 to walk. And they started to see scars, 32 that seemed to be the result of something tunneling through their flesh. After multiple trips to doctors, one made a correct, if disgusting, diagnosis: cutaneous larva migrans (皮肤幼虫移行症), a medical term translated as 'wandering larvae in the skin.' According to the Centers for Disease Control and Prevention, the most common way to be infected is by walking 33 on contaminated soil. More than half a billion people across the world are infected with the parasites, which were once 34 in the United States, the CDC says. Parasitic worms 'account for a major burden of disease worldwide.' Stephens, 35 this month, now on the mend after taking anti-parasitic drugs, was doling out health advice for travelers wary of following in her swollen footsteps: Wear shoes. 'To anybody traveling somewhere 36 , please be careful when in the sand and wear shoes!' she posted. A. assumed F. erupted K. similarly B. barefoot G. injuries L. tropical C. bleeding H. itching M. troublesome D. crutches I. nightmare N. typical E. epidemics J. particularly O. widespread