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The route of ascaris lumbricoides and tapeworm infection is () A. Respiratory tract B. Skin C. Digestive tract D. Blood.
Ascaris lumbricoides is a kind of worm parasitic in the small intestine, which absorbs nutrients in the human intestine and easily leads to malnutrition. Comprehensive measures should be taken to prevent ascaris lumbricoides, including checking patients and carriers, treating feces, managing water sources and preventing infection. We should strengthen publicity and education, popularize health knowledge, pay attention to food hygiene and personal hygiene, and wash our hands before and after meals without eating raw food. Larvae of Taenia solium is parasitic in pigs, and the parasitic part is the muscles that exercise more, especially the inner thigh muscles. Such pork is commonly known as "rice pork"; People who eat this kind of pork will get pork tapeworm disease and grow into adults in the human body. Adults parasitize the upper segment of human small intestine and fix the intestinal wall with the head segment. Therefore, people may suffer from pork tapeworm disease by eating undercooked pork containing pork tapeworm larvae. Therefore, the infection route of ascaris lumbricoides and tapeworm is digestive tract transmission.

So choose: C.