【導(dǎo)讀】1.;________毀滅;________損害;傷害;________毀壞;破壞;________(使). 2.;________井;________管;導(dǎo)管;________百萬(wàn);________大事;________民族;國(guó)家;________運(yùn)河;________蒸汽;________污垢;________苦難;________磚;________水壩;________足跡;________電;________災(zāi)難;________礦