甲、乙、丙、丁四种物质的相互反应关系如图所示(“—”表示相连的物质间能发生反应)下列符合对应反应关系的选项是 选项ABCD 物 质甲Ca(OH)2CO2H2Fe 乙Na2CO3NaOHO2HCl 丙H2SO4CaCl2CuOCuSO4 丁BaCl2AgNO3HClNaOH 答案:AAll the drivers have been warned that driving after drinking shall __ __ serious accidents. A.bring up B.bring back C.bring in D.bring about