prep07 阅读有个句子看不懂，求大神帮忙解读

file:///C:/Users/Farah/AppData/Local/Temp/msohtmlclip1/01/clip_image001.pngfile:///C:/Users/Farah/AppData/Local/Temp/msohtmlclip1/01/clip_image002.pngfile:///C:/Users/Farah/AppData/Local/Temp/msohtmlclip1/01/clip_image003.pngfile:///C:/Users/Farah/AppData/Local/Temp/msohtmlclip1/01/clip_image004.pngfile:///C:/Users/Farah/AppData/Local/Temp/msohtmlclip1/01/clip_image005.pngfile:///C:/Users/Farah/AppData/Local/Temp/msohtmlclip1/01/clip_image006.pngfile:///C:/Users/Farah/AppData/Local/Temp/msohtmlclip1/01/clip_image007.pngfile:///C:/Users/Farah/AppData/Local/Temp/msohtmlclip1/01/clip_image008.pngfile:///C:/Users/Farah/AppData/Local/Temp/msohtmlclip1/01/clip_image009.pngfile:///C:/Users/Farah/AppData/Local/Temp/msohtmlclip1/01/clip_image010.pngfile:///C:/Users/Farah/AppData/Local/Temp/msohtmlclip1/01/clip_image011.pngfile:///C:/Users/Farah/AppData/Local/Temp/msohtmlclip1/01/clip_image012.pngfile:///C:/Users/Farah/AppData/Local/Temp/msohtmlclip1/01/clip_image013.pngfile:///C:/Users/Farah/AppData/Local/Temp/msohtmlclip1/01/clip_image014.pngfile:///C:/Users/Farah/AppData/Local/Temp/msohtmlclip1/01/clip_image015.pngfile:///C:/Users/Farah/AppData/Local/Temp/msohtmlclip1/01/clip_image016.pngfile:///C:/Users/Farah/AppData/Local/Temp/msohtmlclip1/01/clip_image017.pngMost farmers attempting to control slugs and snails turn to baited slugpoison, or molluscicide, which usually consists of a bran pellet containingeither methiocarb or metaldehyde.  Both chemicals are neurotoxinsthat disrupt that part of the brain charged with making the mouth move in acoordinated fashion--the "central pattern generator"--as the slugfeeds.  Thus, both neurotoxins, while somewhat effective, interferewith the slugs' feeding behavior and limit their ingestion of the poison,increasing the probability that some will stop feeding before receiving alethal dose.  Moreover, slugs are not the only consumers of thesepoisons:  methiocarb may be toxic to a variety of species, includingvarieties of worms, carabid beetles, and fish.