题目

—Do you know anything about the weather in Anhui? —I only know that the weather in Anhui is much warmer than ______  in Beijing. A.it        B.this        C.one        D.that 答案：D下列离子方程式，正确的是A．氢氧化铁与盐酸反应：H＋＋OH－=H2O B．CaCO3溶于稀盐酸中：CO32-＋2H＋=CO2↑＋H2O C．铁与H2SO4反应：Fe＋2H＋=Fe3＋＋H2↑ D．Ca(HCO3)2溶液与少量NaOH溶液反应：HCO+Ca2＋+OH－= CaCO3↓+H2O