Early members of the class Reptilia were the first to produce( ). A: neotenic larvae B: amniotic eggs C: urea as a nitrogenous waste D: tadpole larvae E: isolecithal eggs

Final host refers to the host at which stage the parasite lives () A: the larvae B: adult C: Asexual reproduction D: Sexual reproduction E: Larval proliferation

Taeniasis may be caused by A: adult in small intestine B: cysticercus in tissues C: larvae in the body D: hydatid cyst in the liver E: metacercaria in small intestine

蛲虫致病的主要因素是（） A: 夺取宿主营养 B: 成虫特殊的产卵习性和产卵部位 C: 成虫寄生导致局部粘膜的轻度损害 D: 虫体代谢产物和崩解物的毒害 E: 成虫和larvae的毒性作用