---- Do you know how to pronounce “ postman” ? ----- Yes . I in the dictionary yesterday . A. looked it up B. worked it out C. gave it away D. pick it up 答案:A铋不可能具有的性质是( )A.铋的氢化物BiH3,常温下易分解,很不稳定B.铋在常温下是固体,具有一定的还原性,也能导电C.铋的最高价氧化物Bi2O5对应水化物显强氧化性和强酸性D.铋的氧化物中有Bi2O5,也有Bi2O3