老托福阅读真题及答案:PASSAGE15 Fungi,ofwhichthereareover100,000species,includingyeastsandothersingle-monmoldsandmushrooms,,,andsincetheycannotsynthesizetheirowncarbohydrates,,asthoseofplantsare,plexsugarlikepolymercalledchitin,thematerialfromwhichthehardouterskeletonsofshrimps,spiders,,thethreadlikecellsofthefungus,-destroyingenzymesthatenablefungitoattackanythingmadefromwood,woodpulp,cotton,flax,orotherplantmaterial. ,acauseofdiseaseinanimalsandhumans,+50°C,whileotherscangrowat-5°C,,anicmatter,,fungiarethesourceofmanyofthemostpotentantibioticsusedinclinicalmedici
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