7、roundus.B.Sometimeschemistryishardtoseearoundus.C.Howascienceteacherdoesabigexperiment.D.Fewthingsineverydaylifecontainchemistry.答案与解析 B 细节理解题。根据第一段末句可知,本段主要强调“日常生活中看不见的化学”。故选B。2.ThefollowingactionsareaboutchemistryEXCEPT________.A.cleaningteethwithtoothpasteB.washinghairwithhai